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authorUlrich Drepper <drepper@redhat.com>2001-02-19 09:09:18 +0000
committerUlrich Drepper <drepper@redhat.com>2001-02-19 09:09:18 +0000
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Update.
2001-02-19 Ulrich Drepper <drepper@redhat.com> * libio/iogetline.c: Move return until after last statement. * localedata/show-ucs-data.c: Don't show < > for better readability. * sysdeps/ia64/fpu/Dist: New file. * sysdeps/ia64/fpu/Makefile: New file. * sysdeps/ia64/fpu/Versions: New file. * sysdeps/ia64/fpu/e_acos.S: New file. * sysdeps/ia64/fpu/e_acosf.S: New file. * sysdeps/ia64/fpu/e_acosl.S: New file. * sysdeps/ia64/fpu/e_asin.S: New file. * sysdeps/ia64/fpu/e_asinf.S: New file. * sysdeps/ia64/fpu/e_asinl.S: New file. * sysdeps/ia64/fpu/e_atan2.S: New file. * sysdeps/ia64/fpu/e_atan2f.S: New file. * sysdeps/ia64/fpu/e_atan2l.c: New file. * sysdeps/ia64/fpu/e_cosh.S: New file. * sysdeps/ia64/fpu/e_coshf.S: New file. * sysdeps/ia64/fpu/e_coshl.S: New file. * sysdeps/ia64/fpu/e_exp.S: New file. * sysdeps/ia64/fpu/e_expf.S: New file. * sysdeps/ia64/fpu/e_expl.c: New file. * sysdeps/ia64/fpu/e_fmod.S: New file. * sysdeps/ia64/fpu/e_fmodf.S: New file. * sysdeps/ia64/fpu/e_fmodl.S: New file. * sysdeps/ia64/fpu/e_hypot.S: New file. * sysdeps/ia64/fpu/e_hypotf.S: New file. * sysdeps/ia64/fpu/e_hypotl.S: New file. * sysdeps/ia64/fpu/e_log.S: New file. * sysdeps/ia64/fpu/e_log10.c: New file. * sysdeps/ia64/fpu/e_log10f.c: New file. * sysdeps/ia64/fpu/e_log10l.c: New file. * sysdeps/ia64/fpu/e_logf.S: New file. * sysdeps/ia64/fpu/e_logl.c: New file. * sysdeps/ia64/fpu/e_pow.S: New file. * sysdeps/ia64/fpu/e_powf.S: New file. * sysdeps/ia64/fpu/e_powl.S: New file. * sysdeps/ia64/fpu/e_rem_pio2.c: New file. * sysdeps/ia64/fpu/e_rem_pio2f.c: New file. * sysdeps/ia64/fpu/e_remainder.S: New file. * sysdeps/ia64/fpu/e_remainderf.S: New file. * sysdeps/ia64/fpu/e_remainderl.S: New file. * sysdeps/ia64/fpu/e_scalb.S: New file. * sysdeps/ia64/fpu/e_scalbf.S: New file. * sysdeps/ia64/fpu/e_scalbl.S: New file. * sysdeps/ia64/fpu/e_sinh.S: New file. * sysdeps/ia64/fpu/e_sinhf.S: New file. * sysdeps/ia64/fpu/e_sinhl.S: New file. * sysdeps/ia64/fpu/e_sqrt.S: New file. * sysdeps/ia64/fpu/e_sqrtf.S: New file. * sysdeps/ia64/fpu/e_sqrtl.S: New file. * sysdeps/ia64/fpu/k_rem_pio2.c: New file. * sysdeps/ia64/fpu/k_rem_pio2f.c: New file. * sysdeps/ia64/fpu/k_rem_pio2l.c: New file. * sysdeps/ia64/fpu/libm_atan2_reg.S: New file. * sysdeps/ia64/fpu/libm_error.c: New file. * sysdeps/ia64/fpu/libm_frexp4.S: New file. * sysdeps/ia64/fpu/libm_frexp4f.S: New file. * sysdeps/ia64/fpu/libm_frexp4l.S: New file. * sysdeps/ia64/fpu/libm_reduce.S: New file. * sysdeps/ia64/fpu/libm_support.h: New file. * sysdeps/ia64/fpu/libm_tan.S: New file. * sysdeps/ia64/fpu/s_atan.S: New file. * sysdeps/ia64/fpu/s_atanf.S: New file. * sysdeps/ia64/fpu/s_atanl.S: New file. * sysdeps/ia64/fpu/s_cbrt.S: New file. * sysdeps/ia64/fpu/s_cbrtf.S: New file. * sysdeps/ia64/fpu/s_cbrtl.S: New file. * sysdeps/ia64/fpu/s_ceil.S: New file. * sysdeps/ia64/fpu/s_ceilf.S: New file. * sysdeps/ia64/fpu/s_ceill.S: New file. * sysdeps/ia64/fpu/s_cos.S: New file. * sysdeps/ia64/fpu/s_cosf.S: New file. * sysdeps/ia64/fpu/s_cosl.S: New file. * sysdeps/ia64/fpu/s_expm1.S: New file. * sysdeps/ia64/fpu/s_expm1f.S: New file. * sysdeps/ia64/fpu/s_expm1l.S: New file. * sysdeps/ia64/fpu/s_floor.S: New file. * sysdeps/ia64/fpu/s_floorf.S: New file. * sysdeps/ia64/fpu/s_floorl.S: New file. * sysdeps/ia64/fpu/s_frexp.c: New file. * sysdeps/ia64/fpu/s_frexpf.c: New file. * sysdeps/ia64/fpu/s_frexpl.c: New file. * sysdeps/ia64/fpu/s_ilogb.S: New file. * sysdeps/ia64/fpu/s_ilogbf.S: New file. * sysdeps/ia64/fpu/s_ilogbl.S: New file. * sysdeps/ia64/fpu/s_ldexp.S: New file. * sysdeps/ia64/fpu/s_ldexpf.S: New file. * sysdeps/ia64/fpu/s_ldexpl.S: New file. * sysdeps/ia64/fpu/s_log1p.S: New file. * sysdeps/ia64/fpu/s_log1pf.S: New file. * sysdeps/ia64/fpu/s_log1pl.S: New file. * sysdeps/ia64/fpu/s_logb.S: New file. * sysdeps/ia64/fpu/s_logbf.S: New file. * sysdeps/ia64/fpu/s_logbl.S: New file. * sysdeps/ia64/fpu/s_matherrf.c: New file. * sysdeps/ia64/fpu/s_matherrl.c: New file. * sysdeps/ia64/fpu/s_modf.S: New file. * sysdeps/ia64/fpu/s_modff.S: New file. * sysdeps/ia64/fpu/s_modfl.S: New file. * sysdeps/ia64/fpu/s_nearbyint.S: New file. * sysdeps/ia64/fpu/s_nearbyintf.S: New file. * sysdeps/ia64/fpu/s_nearbyintl.S: New file. * sysdeps/ia64/fpu/s_rint.S: New file. * sysdeps/ia64/fpu/s_rintf.S: New file. * sysdeps/ia64/fpu/s_rintl.S: New file. * sysdeps/ia64/fpu/s_round.S: New file. * sysdeps/ia64/fpu/s_roundf.S: New file. * sysdeps/ia64/fpu/s_roundl.S: New file. * sysdeps/ia64/fpu/s_scalbn.S: New file. * sysdeps/ia64/fpu/s_scalbnf.S: New file. * sysdeps/ia64/fpu/s_scalbnl.S: New file. * sysdeps/ia64/fpu/s_significand.S: New file. * sysdeps/ia64/fpu/s_significandf.S: New file. * sysdeps/ia64/fpu/s_significandl.S: New file. * sysdeps/ia64/fpu/s_sin.c: New file. * sysdeps/ia64/fpu/s_sincos.c: New file. * sysdeps/ia64/fpu/s_sincosf.c: New file. * sysdeps/ia64/fpu/s_sincosl.c: New file. * sysdeps/ia64/fpu/s_sinf.c: New file. * sysdeps/ia64/fpu/s_sinl.c: New file. * sysdeps/ia64/fpu/s_tan.S: New file. * sysdeps/ia64/fpu/s_tanf.S: New file. * sysdeps/ia64/fpu/s_tanl.S: New file. * sysdeps/ia64/fpu/s_trunc.S: New file. * sysdeps/ia64/fpu/s_truncf.S: New file. * sysdeps/ia64/fpu/s_truncl.S: New file. * sysdeps/ia64/fpu/w_acos.c: New file. * sysdeps/ia64/fpu/w_acosf.c: New file. * sysdeps/ia64/fpu/w_acosl.c: New file. * sysdeps/ia64/fpu/w_asin.c: New file. * sysdeps/ia64/fpu/w_asinf.c: New file. * sysdeps/ia64/fpu/w_asinl.c: New file. * sysdeps/ia64/fpu/w_atan2.c: New file. * sysdeps/ia64/fpu/w_atan2f.c: New file. * sysdeps/ia64/fpu/w_atan2l.c: New file. * sysdeps/ia64/fpu/w_cosh.c: New file. * sysdeps/ia64/fpu/w_coshf.c: New file. * sysdeps/ia64/fpu/w_coshl.c: New file. * sysdeps/ia64/fpu/w_exp.c: New file. * sysdeps/ia64/fpu/w_expf.c: New file. * sysdeps/ia64/fpu/w_fmod.c: New file. * sysdeps/ia64/fpu/w_fmodf.c: New file. * sysdeps/ia64/fpu/w_fmodl.c: New file. * sysdeps/ia64/fpu/w_hypot.c: New file. * sysdeps/ia64/fpu/w_hypotf.c: New file. * sysdeps/ia64/fpu/w_hypotl.c: New file. * sysdeps/ia64/fpu/w_log.c: New file. * sysdeps/ia64/fpu/w_log10.c: New file. * sysdeps/ia64/fpu/w_log10f.c: New file. * sysdeps/ia64/fpu/w_log10l.c: New file. * sysdeps/ia64/fpu/w_logf.c: New file. * sysdeps/ia64/fpu/w_logl.c: New file. * sysdeps/ia64/fpu/w_pow.c: New file. * sysdeps/ia64/fpu/w_powf.c: New file. * sysdeps/ia64/fpu/w_powl.c: New file. * sysdeps/ia64/fpu/w_remainder.c: New file. * sysdeps/ia64/fpu/w_remainderf.c: New file. * sysdeps/ia64/fpu/w_remainderl.c: New file. * sysdeps/ia64/fpu/w_scalb.c: New file. * sysdeps/ia64/fpu/w_scalbf.c: New file. * sysdeps/ia64/fpu/w_scalbl.c: New file. * sysdeps/ia64/fpu/w_sqrt.c: New file. * sysdeps/ia64/fpu/w_sqrtf.c: New file. * sysdeps/ia64/fpu/w_sqrtl.c: New file. * sysdeps/ia64/fpu/libm-test-ulps: Adjust for long double implementation. * sysdeps/ia64/fpu/bits/mathdef.h: Correct float_t and double_t types. Change FP_ILOGBNAN for new implementation. * Verions.def: Add 2.2.3 versions.
Diffstat (limited to 'sysdeps/ia64/fpu/s_log1p.S')
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diff --git a/sysdeps/ia64/fpu/s_log1p.S b/sysdeps/ia64/fpu/s_log1p.S
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+.file "log1p.s"
+
+// Copyright (c) 2000, 2001, Intel Corporation
+// All rights reserved.
+//
+// Contributed 2/2/2000 by John Harrison, Ted Kubaska, Bob Norin, Shane Story,
+// and Ping Tak Peter Tang of the Computational Software Lab, Intel Corporation.
+//
+// WARRANTY DISCLAIMER
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL OR ITS
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Intel Corporation is the author of this code, and requests that all
+// problem reports or change requests be submitted to it directly at
+// http://developer.intel.com/opensource.
+//
+// History
+//==============================================================
+// 2/02/00 Initial version
+// 4/04/00 Unwind support added
+// 8/15/00 Bundle added after call to __libm_error_support to properly
+// set [the previously overwritten] GR_Parameter_RESULT.
+//
+// *********************************************************************
+//
+// Function: log1p(x) = ln(x+1), for double precision x values
+//
+// *********************************************************************
+//
+// Accuracy: Very accurate for double precision values
+//
+// *********************************************************************
+//
+// Resources Used:
+//
+// Floating-Point Registers: f8 (Input and Return Value)
+// f9,f33-f55,f99
+//
+// General Purpose Registers:
+// r32-r53
+// r54-r57 (Used to pass arguments to error handling routine)
+//
+// Predicate Registers: p6-p15
+//
+// *********************************************************************
+//
+// IEEE Special Conditions:
+//
+// Denormal fault raised on denormal inputs
+// Overflow exceptions cannot occur
+// Underflow exceptions raised when appropriate for log1p
+// (Error Handling Routine called for underflow)
+// Inexact raised when appropriate by algorithm
+//
+// log1p(inf) = inf
+// log1p(-inf) = QNaN
+// log1p(+/-0) = +/-0
+// log1p(-1) = -inf
+// log1p(SNaN) = QNaN
+// log1p(QNaN) = QNaN
+// log1p(EM_special Values) = QNaN
+//
+// *********************************************************************
+//
+// Computation is based on the following kernel.
+//
+// ker_log_64( in_FR : X,
+// in_FR : E,
+// in_FR : Em1,
+// in_GR : Expo_Range,
+// out_FR : Y_hi,
+// out_FR : Y_lo,
+// out_FR : Scale,
+// out_PR : Safe )
+//
+// Overview
+//
+// The method consists of three cases.
+//
+// If |X+Em1| < 2^(-80) use case log1p_small;
+// elseif |X+Em1| < 2^(-7) use case log_near1;
+// else use case log_regular;
+//
+// Case log1p_small:
+//
+// log( 1 + (X+Em1) ) can be approximated by (X+Em1).
+//
+// Case log_near1:
+//
+// log( 1 + (X+Em1) ) can be approximated by a simple polynomial
+// in W = X+Em1. This polynomial resembles the truncated Taylor
+// series W - W^/2 + W^3/3 - ...
+//
+// Case log_regular:
+//
+// Here we use a table lookup method. The basic idea is that in
+// order to compute log(Arg) for an argument Arg in [1,2), we
+// construct a value G such that G*Arg is close to 1 and that
+// log(1/G) is obtainable easily from a table of values calculated
+// beforehand. Thus
+//
+// log(Arg) = log(1/G) + log(G*Arg)
+// = log(1/G) + log(1 + (G*Arg - 1))
+//
+// Because |G*Arg - 1| is small, the second term on the right hand
+// side can be approximated by a short polynomial. We elaborate
+// this method in four steps.
+//
+// Step 0: Initialization
+//
+// We need to calculate log( E + X ). Obtain N, S_hi, S_lo such that
+//
+// E + X = 2^N * ( S_hi + S_lo ) exactly
+//
+// where S_hi in [1,2) and S_lo is a correction to S_hi in the sense
+// that |S_lo| <= ulp(S_hi).
+//
+// Step 1: Argument Reduction
+//
+// Based on S_hi, obtain G_1, G_2, G_3 from a table and calculate
+//
+// G := G_1 * G_2 * G_3
+// r := (G * S_hi - 1) + G * S_lo
+//
+// These G_j's have the property that the product is exactly
+// representable and that |r| < 2^(-12) as a result.
+//
+// Step 2: Approximation
+//
+//
+// log(1 + r) is approximated by a short polynomial poly(r).
+//
+// Step 3: Reconstruction
+//
+//
+// Finally, log( E + X ) is given by
+//
+// log( E + X ) = log( 2^N * (S_hi + S_lo) )
+// ~=~ N*log(2) + log(1/G) + log(1 + r)
+// ~=~ N*log(2) + log(1/G) + poly(r).
+//
+// **** Algorithm ****
+//
+// Case log1p_small:
+//
+// Although log(1 + (X+Em1)) is basically X+Em1, we would like to
+// preserve the inexactness nature as well as consistent behavior
+// under different rounding modes. Note that this case can only be
+// taken if E is set to be 1.0. In this case, Em1 is zero, and that
+// X can be very tiny and thus the final result can possibly underflow.
+// Thus, we compare X against a threshold that is dependent on the
+// input Expo_Range. If |X| is smaller than this threshold, we set
+// SAFE to be FALSE.
+//
+// The result is returned as Y_hi, Y_lo, and in the case of SAFE
+// is FALSE, an additional value Scale is also returned.
+//
+// W := X + Em1
+// Threshold := Threshold_Table( Expo_Range )
+// Tiny := Tiny_Table( Expo_Range )
+//
+// If ( |W| > Threshold ) then
+// Y_hi := W
+// Y_lo := -W*W
+// Else
+// Y_hi := W
+// Y_lo := -Tiny
+// Scale := 2^(-100)
+// Safe := FALSE
+// EndIf
+//
+//
+// One may think that Y_lo should be -W*W/2; however, it does not matter
+// as Y_lo will be rounded off completely except for the correct effect in
+// directed rounding. Clearly -W*W is simplier to compute. Moreover,
+// because of the difference in exponent value, Y_hi + Y_lo or
+// Y_hi + Scale*Y_lo is always inexact.
+//
+// Case log_near1:
+//
+// Here we compute a simple polynomial. To exploit parallelism, we split
+// the polynomial into two portions.
+//
+// W := X + Em1
+// Wsq := W * W
+// W4 := Wsq*Wsq
+// W6 := W4*Wsq
+// Y_hi := W + Wsq*(P_1 + W*(P_2 + W*(P_3 + W*P_4))
+// Y_lo := W6*(P_5 + W*(P_6 + W*(P_7 + W*P_8)))
+// set lsb(Y_lo) to be 1
+//
+// Case log_regular:
+//
+// We present the algorithm in four steps.
+//
+// Step 0. Initialization
+// ----------------------
+//
+// Z := X + E
+// N := unbaised exponent of Z
+// S_hi := 2^(-N) * Z
+// S_lo := 2^(-N) * { (max(X,E)-Z) + min(X,E) }
+//
+// Note that S_lo is always 0 for the case E = 0.
+//
+// Step 1. Argument Reduction
+// --------------------------
+//
+// Let
+//
+// Z = 2^N * S_hi = 2^N * 1.d_1 d_2 d_3 ... d_63
+//
+// We obtain G_1, G_2, G_3 by the following steps.
+//
+//
+// Define X_0 := 1.d_1 d_2 ... d_14. This is extracted
+// from S_hi.
+//
+// Define A_1 := 1.d_1 d_2 d_3 d_4. This is X_0 truncated
+// to lsb = 2^(-4).
+//
+// Define index_1 := [ d_1 d_2 d_3 d_4 ].
+//
+// Fetch Z_1 := (1/A_1) rounded UP in fixed point with
+// fixed point lsb = 2^(-15).
+// Z_1 looks like z_0.z_1 z_2 ... z_15
+// Note that the fetching is done using index_1.
+// A_1 is actually not needed in the implementation
+// and is used here only to explain how is the value
+// Z_1 defined.
+//
+// Fetch G_1 := (1/A_1) truncated to 21 sig. bits.
+// floating pt. Again, fetching is done using index_1. A_1
+// explains how G_1 is defined.
+//
+// Calculate X_1 := X_0 * Z_1 truncated to lsb = 2^(-14)
+// = 1.0 0 0 0 d_5 ... d_14
+// This is accomplised by integer multiplication.
+// It is proved that X_1 indeed always begin
+// with 1.0000 in fixed point.
+//
+//
+// Define A_2 := 1.0 0 0 0 d_5 d_6 d_7 d_8. This is X_1
+// truncated to lsb = 2^(-8). Similar to A_1,
+// A_2 is not needed in actual implementation. It
+// helps explain how some of the values are defined.
+//
+// Define index_2 := [ d_5 d_6 d_7 d_8 ].
+//
+// Fetch Z_2 := (1/A_2) rounded UP in fixed point with
+// fixed point lsb = 2^(-15). Fetch done using index_2.
+// Z_2 looks like z_0.z_1 z_2 ... z_15
+//
+// Fetch G_2 := (1/A_2) truncated to 21 sig. bits.
+// floating pt.
+//
+// Calculate X_2 := X_1 * Z_2 truncated to lsb = 2^(-14)
+// = 1.0 0 0 0 0 0 0 0 d_9 d_10 ... d_14
+// This is accomplised by integer multiplication.
+// It is proved that X_2 indeed always begin
+// with 1.00000000 in fixed point.
+//
+//
+// Define A_3 := 1.0 0 0 0 0 0 0 0 d_9 d_10 d_11 d_12 d_13 1.
+// This is 2^(-14) + X_2 truncated to lsb = 2^(-13).
+//
+// Define index_3 := [ d_9 d_10 d_11 d_12 d_13 ].
+//
+// Fetch G_3 := (1/A_3) truncated to 21 sig. bits.
+// floating pt. Fetch is done using index_3.
+//
+// Compute G := G_1 * G_2 * G_3.
+//
+// This is done exactly since each of G_j only has 21 sig. bits.
+//
+// Compute
+//
+// r := (G*S_hi - 1) + G*S_lo using 2 FMA operations.
+//
+// thus, r approximates G*(S_hi+S_lo) - 1 to within a couple of
+// rounding errors.
+//
+//
+// Step 2. Approximation
+// ---------------------
+//
+// This step computes an approximation to log( 1 + r ) where r is the
+// reduced argument just obtained. It is proved that |r| <= 1.9*2^(-13);
+// thus log(1+r) can be approximated by a short polynomial:
+//
+// log(1+r) ~=~ poly = r + Q1 r^2 + ... + Q4 r^5
+//
+//
+// Step 3. Reconstruction
+// ----------------------
+//
+// This step computes the desired result of log(X+E):
+//
+// log(X+E) = log( 2^N * (S_hi + S_lo) )
+// = N*log(2) + log( S_hi + S_lo )
+// = N*log(2) + log(1/G) +
+// log(1 + C*(S_hi+S_lo) - 1 )
+//
+// log(2), log(1/G_j) are stored as pairs of (single,double) numbers:
+// log2_hi, log2_lo, log1byGj_hi, log1byGj_lo. The high parts are
+// single-precision numbers and the low parts are double precision
+// numbers. These have the property that
+//
+// N*log2_hi + SUM ( log1byGj_hi )
+//
+// is computable exactly in double-extended precision (64 sig. bits).
+// Finally
+//
+// Y_hi := N*log2_hi + SUM ( log1byGj_hi )
+// Y_lo := poly_hi + [ poly_lo +
+// ( SUM ( log1byGj_lo ) + N*log2_lo ) ]
+// set lsb(Y_lo) to be 1
+//
+
+#include "libm_support.h"
+
+#ifdef _LIBC
+.rodata
+#else
+.data
+#endif
+
+// P_7, P_6, P_5, P_4, P_3, P_2, and P_1
+
+.align 64
+Constants_P:
+ASM_TYPE_DIRECTIVE(Constants_P,@object)
+data4 0xEFD62B15,0xE3936754,0x00003FFB,0x00000000
+data4 0xA5E56381,0x8003B271,0x0000BFFC,0x00000000
+data4 0x73282DB0,0x9249248C,0x00003FFC,0x00000000
+data4 0x47305052,0xAAAAAA9F,0x0000BFFC,0x00000000
+data4 0xCCD17FC9,0xCCCCCCCC,0x00003FFC,0x00000000
+data4 0x00067ED5,0x80000000,0x0000BFFD,0x00000000
+data4 0xAAAAAAAA,0xAAAAAAAA,0x00003FFD,0x00000000
+data4 0xFFFFFFFE,0xFFFFFFFF,0x0000BFFD,0x00000000
+ASM_SIZE_DIRECTIVE(Constants_P)
+
+// log2_hi, log2_lo, Q_4, Q_3, Q_2, and Q_1
+
+.align 64
+Constants_Q:
+ASM_TYPE_DIRECTIVE(Constants_Q,@object)
+data4 0x00000000,0xB1721800,0x00003FFE,0x00000000
+data4 0x4361C4C6,0x82E30865,0x0000BFE2,0x00000000
+data4 0x328833CB,0xCCCCCAF2,0x00003FFC,0x00000000
+data4 0xA9D4BAFB,0x80000077,0x0000BFFD,0x00000000
+data4 0xAAABE3D2,0xAAAAAAAA,0x00003FFD,0x00000000
+data4 0xFFFFDAB7,0xFFFFFFFF,0x0000BFFD,0x00000000
+ASM_SIZE_DIRECTIVE(Constants_Q)
+
+// Z1 - 16 bit fixed, G1 and H1 - IEEE single
+
+.align 64
+Constants_Z_G_H_h1:
+ASM_TYPE_DIRECTIVE(Constants_Z_G_H_h1,@object)
+data4 0x00008000,0x3F800000,0x00000000,0x00000000,0x00000000,0x00000000
+data4 0x00007879,0x3F70F0F0,0x3D785196,0x00000000,0x617D741C,0x3DA163A6
+data4 0x000071C8,0x3F638E38,0x3DF13843,0x00000000,0xCBD3D5BB,0x3E2C55E6
+data4 0x00006BCB,0x3F579430,0x3E2FF9A0,0x00000000,0xD86EA5E7,0xBE3EB0BF
+data4 0x00006667,0x3F4CCCC8,0x3E647FD6,0x00000000,0x86B12760,0x3E2E6A8C
+data4 0x00006187,0x3F430C30,0x3E8B3AE7,0x00000000,0x5C0739BA,0x3E47574C
+data4 0x00005D18,0x3F3A2E88,0x3EA30C68,0x00000000,0x13E8AF2F,0x3E20E30F
+data4 0x0000590C,0x3F321640,0x3EB9CEC8,0x00000000,0xF2C630BD,0xBE42885B
+data4 0x00005556,0x3F2AAAA8,0x3ECF9927,0x00000000,0x97E577C6,0x3E497F34
+data4 0x000051EC,0x3F23D708,0x3EE47FC5,0x00000000,0xA6B0A5AB,0x3E3E6A6E
+data4 0x00004EC5,0x3F1D89D8,0x3EF8947D,0x00000000,0xD328D9BE,0xBDF43E3C
+data4 0x00004BDB,0x3F17B420,0x3F05F3A1,0x00000000,0x0ADB090A,0x3E4094C3
+data4 0x00004925,0x3F124920,0x3F0F4303,0x00000000,0xFC1FE510,0xBE28FBB2
+data4 0x0000469F,0x3F0D3DC8,0x3F183EBF,0x00000000,0x10FDE3FA,0x3E3A7895
+data4 0x00004445,0x3F088888,0x3F20EC80,0x00000000,0x7CC8C98F,0x3E508CE5
+data4 0x00004211,0x3F042108,0x3F29516A,0x00000000,0xA223106C,0xBE534874
+ASM_SIZE_DIRECTIVE(Constants_Z_G_H_h1)
+
+// Z2 - 16 bit fixed, G2 and H2 - IEEE single
+
+.align 64
+Constants_Z_G_H_h2:
+ASM_TYPE_DIRECTIVE(Constants_Z_G_H_h2,@object)
+data4 0x00008000,0x3F800000,0x00000000,0x00000000,0x00000000,0x00000000
+data4 0x00007F81,0x3F7F00F8,0x3B7F875D,0x00000000,0x22C42273,0x3DB5A116
+data4 0x00007F02,0x3F7E03F8,0x3BFF015B,0x00000000,0x21F86ED3,0x3DE620CF
+data4 0x00007E85,0x3F7D08E0,0x3C3EE393,0x00000000,0x484F34ED,0xBDAFA07E
+data4 0x00007E08,0x3F7C0FC0,0x3C7E0586,0x00000000,0x3860BCF6,0xBDFE07F0
+data4 0x00007D8D,0x3F7B1880,0x3C9E75D2,0x00000000,0xA78093D6,0x3DEA370F
+data4 0x00007D12,0x3F7A2328,0x3CBDC97A,0x00000000,0x72A753D0,0x3DFF5791
+data4 0x00007C98,0x3F792FB0,0x3CDCFE47,0x00000000,0xA7EF896B,0x3DFEBE6C
+data4 0x00007C20,0x3F783E08,0x3CFC15D0,0x00000000,0x409ECB43,0x3E0CF156
+data4 0x00007BA8,0x3F774E38,0x3D0D874D,0x00000000,0xFFEF71DF,0xBE0B6F97
+data4 0x00007B31,0x3F766038,0x3D1CF49B,0x00000000,0x5D59EEE8,0xBE080483
+data4 0x00007ABB,0x3F757400,0x3D2C531D,0x00000000,0xA9192A74,0x3E1F91E9
+data4 0x00007A45,0x3F748988,0x3D3BA322,0x00000000,0xBF72A8CD,0xBE139A06
+data4 0x000079D1,0x3F73A0D0,0x3D4AE46F,0x00000000,0xF8FBA6CF,0x3E1D9202
+data4 0x0000795D,0x3F72B9D0,0x3D5A1756,0x00000000,0xBA796223,0xBE1DCCC4
+data4 0x000078EB,0x3F71D488,0x3D693B9D,0x00000000,0xB6B7C239,0xBE049391
+ASM_SIZE_DIRECTIVE(Constants_Z_G_H_h2)
+
+// G3 and H3 - IEEE single and h3 -IEEE double
+
+.align 64
+Constants_Z_G_H_h3:
+ASM_TYPE_DIRECTIVE(Constants_Z_G_H_h3,@object)
+data4 0x3F7FFC00,0x38800100,0x562224CD,0x3D355595
+data4 0x3F7FF400,0x39400480,0x06136FF6,0x3D8200A2
+data4 0x3F7FEC00,0x39A00640,0xE8DE9AF0,0x3DA4D68D
+data4 0x3F7FE400,0x39E00C41,0xB10238DC,0xBD8B4291
+data4 0x3F7FDC00,0x3A100A21,0x3B1952CA,0xBD89CCB8
+data4 0x3F7FD400,0x3A300F22,0x1DC46826,0xBDB10707
+data4 0x3F7FCC08,0x3A4FF51C,0xF43307DB,0x3DB6FCB9
+data4 0x3F7FC408,0x3A6FFC1D,0x62DC7872,0xBD9B7C47
+data4 0x3F7FBC10,0x3A87F20B,0x3F89154A,0xBDC3725E
+data4 0x3F7FB410,0x3A97F68B,0x62B9D392,0xBD93519D
+data4 0x3F7FAC18,0x3AA7EB86,0x0F21BD9D,0x3DC18441
+data4 0x3F7FA420,0x3AB7E101,0x2245E0A6,0xBDA64B95
+data4 0x3F7F9C20,0x3AC7E701,0xAABB34B8,0x3DB4B0EC
+data4 0x3F7F9428,0x3AD7DD7B,0x6DC40A7E,0x3D992337
+data4 0x3F7F8C30,0x3AE7D474,0x4F2083D3,0x3DC6E17B
+data4 0x3F7F8438,0x3AF7CBED,0x811D4394,0x3DAE314B
+data4 0x3F7F7C40,0x3B03E1F3,0xB08F2DB1,0xBDD46F21
+data4 0x3F7F7448,0x3B0BDE2F,0x6D34522B,0xBDDC30A4
+data4 0x3F7F6C50,0x3B13DAAA,0xB1F473DB,0x3DCB0070
+data4 0x3F7F6458,0x3B1BD766,0x6AD282FD,0xBDD65DDC
+data4 0x3F7F5C68,0x3B23CC5C,0xF153761A,0xBDCDAB83
+data4 0x3F7F5470,0x3B2BC997,0x341D0F8F,0xBDDADA40
+data4 0x3F7F4C78,0x3B33C711,0xEBC394E8,0x3DCD1BD7
+data4 0x3F7F4488,0x3B3BBCC6,0x52E3E695,0xBDC3532B
+data4 0x3F7F3C90,0x3B43BAC0,0xE846B3DE,0xBDA3961E
+data4 0x3F7F34A0,0x3B4BB0F4,0x785778D4,0xBDDADF06
+data4 0x3F7F2CA8,0x3B53AF6D,0xE55CE212,0x3DCC3ED1
+data4 0x3F7F24B8,0x3B5BA620,0x9E382C15,0xBDBA3103
+data4 0x3F7F1CC8,0x3B639D12,0x5C5AF197,0x3D635A0B
+data4 0x3F7F14D8,0x3B6B9444,0x71D34EFC,0xBDDCCB19
+data4 0x3F7F0CE0,0x3B7393BC,0x52CD7ADA,0x3DC74502
+data4 0x3F7F04F0,0x3B7B8B6D,0x7D7F2A42,0xBDB68F17
+ASM_SIZE_DIRECTIVE(Constants_Z_G_H_h3)
+
+//
+// Exponent Thresholds and Tiny Thresholds
+// for 8, 11, 15, and 17 bit exponents
+//
+// Expo_Range Value
+//
+// 0 (8 bits) 2^(-126)
+// 1 (11 bits) 2^(-1022)
+// 2 (15 bits) 2^(-16382)
+// 3 (17 bits) 2^(-16382)
+//
+// Tiny_Table
+// ----------
+// Expo_Range Value
+//
+// 0 (8 bits) 2^(-16382)
+// 1 (11 bits) 2^(-16382)
+// 2 (15 bits) 2^(-16382)
+// 3 (17 bits) 2^(-16382)
+//
+
+.align 64
+Constants_Threshold:
+ASM_TYPE_DIRECTIVE(Constants_Threshold,@object)
+data4 0x00000000,0x80000000,0x00003F81,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+data4 0x00000000,0x80000000,0x00003C01,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+data4 0x00000000,0x80000000,0x00000001,0x00000000
+ASM_SIZE_DIRECTIVE(Constants_Threshold)
+
+.align 64
+Constants_1_by_LN10:
+ASM_TYPE_DIRECTIVE(Constants_1_by_LN10,@object)
+data4 0x37287195,0xDE5BD8A9,0x00003FFD,0x00000000
+data4 0xACCF70C8,0xD56EAABE,0x00003FBD,0x00000000
+ASM_SIZE_DIRECTIVE(Constants_1_by_LN10)
+
+FR_Input_X = f8
+FR_Neg_One = f9
+FR_E = f33
+FR_Em1 = f34
+FR_Y_hi = f34
+// Shared with Em1
+FR_Y_lo = f35
+FR_Scale = f36
+FR_X_Prime = f37
+FR_Z = f38
+FR_S_hi = f38
+// Shared with Z
+FR_W = f39
+FR_G = f40
+FR_wsq = f40
+// Shared with G
+FR_H = f41
+FR_w4 = f41
+// Shared with H
+FR_h = f42
+FR_w6 = f42
+// Shared with h
+FR_G_tmp = f43
+FR_poly_lo = f43
+// Shared with G_tmp
+FR_P8 = f43
+// Shared with G_tmp
+FR_H_tmp = f44
+FR_poly_hi = f44
+ // Shared with H_tmp
+FR_P7 = f44
+// Shared with H_tmp
+FR_h_tmp = f45
+FR_rsq = f45
+// Shared with h_tmp
+FR_P6 = f45
+// Shared with h_tmp
+FR_abs_W = f46
+FR_r = f46
+// Shared with abs_W
+FR_AA = f47
+FR_log2_hi = f47
+// Shared with AA
+FR_BB = f48
+FR_log2_lo = f48
+// Shared with BB
+FR_S_lo = f49
+FR_two_negN = f50
+FR_float_N = f51
+FR_Q4 = f52
+FR_dummy = f52
+// Shared with Q4
+FR_P4 = f52
+// Shared with Q4
+FR_Threshold = f52
+// Shared with Q4
+FR_Q3 = f53
+FR_P3 = f53
+// Shared with Q3
+FR_Tiny = f53
+// Shared with Q3
+FR_Q2 = f54
+FR_P2 = f54
+// Shared with Q2
+FR_1LN10_hi = f54
+// Shared with Q2
+FR_Q1 = f55
+FR_P1 = f55
+// Shared with Q1
+FR_1LN10_lo = f55
+// Shared with Q1
+FR_P5 = f98
+FR_SCALE = f98
+FR_Output_X_tmp = f99
+
+GR_Expo_Range = r32
+GR_Table_Base = r34
+GR_Table_Base1 = r35
+GR_Table_ptr = r36
+GR_Index2 = r37
+GR_signif = r38
+GR_X_0 = r39
+GR_X_1 = r40
+GR_X_2 = r41
+GR_Z_1 = r42
+GR_Z_2 = r43
+GR_N = r44
+GR_Bias = r45
+GR_M = r46
+GR_ScaleN = r47
+GR_Index3 = r48
+GR_Perturb = r49
+GR_Table_Scale = r50
+
+
+GR_SAVE_PFS = r51
+GR_SAVE_B0 = r52
+GR_SAVE_GP = r53
+
+GR_Parameter_X = r54
+GR_Parameter_Y = r55
+GR_Parameter_RESULT = r56
+
+GR_Parameter_TAG = r57
+
+
+.section .text
+.proc log1p#
+.global log1p#
+.align 64
+log1p:
+#ifdef _LIBC
+.global __log1p
+__log1p:
+#endif
+
+{ .mfi
+alloc r32 = ar.pfs,0,22,4,0
+(p0) fsub.s1 FR_Neg_One = f0,f1
+(p0) cmp.eq.unc p7, p0 = r0, r0
+}
+
+{ .mfi
+(p0) cmp.ne.unc p14, p0 = r0, r0
+(p0) fnorm.s1 FR_X_Prime = FR_Input_X
+(p0) cmp.eq.unc p15, p0 = r0, r0 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fclass.m.unc p6, p0 = FR_Input_X, 0x1E3
+ nop.i 999
+}
+;;
+
+{ .mfi
+ nop.m 999
+(p0) fclass.nm.unc p10, p0 = FR_Input_X, 0x1FF
+ nop.i 999
+}
+;;
+
+{ .mfi
+ nop.m 999
+(p0) fcmp.eq.unc.s1 p9, p0 = FR_Input_X, f0
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fadd FR_Em1 = f0,f0
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fadd FR_E = f0,f1
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fcmp.eq.unc.s1 p8, p0 = FR_Input_X, FR_Neg_One
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fcmp.lt.unc.s1 p13, p0 = FR_Input_X, FR_Neg_One
+ nop.i 999
+}
+
+
+L(LOG_BEGIN):
+
+{ .mfi
+ nop.m 999
+(p0) fadd.s1 FR_Z = FR_X_Prime, FR_E
+ nop.i 999
+}
+
+{ .mlx
+ nop.m 999
+(p0) movl GR_Table_Scale = 0x0000000000000018 ;;
+}
+
+{ .mmi
+ nop.m 999
+//
+// Create E = 1 and Em1 = 0
+// Check for X == 0, meaning log(1+0)
+// Check for X < -1, meaning log(negative)
+// Check for X == -1, meaning log(0)
+// Normalize x
+// Identify NatVals, NaNs, Infs.
+// Identify EM unsupporteds.
+// Identify Negative values - us S1 so as
+// not to raise denormal operand exception
+// Set p15 to true for log1p
+// Set p14 to false for log1p
+// Set p7 true for log and log1p
+//
+(p0) addl GR_Table_Base = @ltoff(Constants_Z_G_H_h1#),gp
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fmax.s1 FR_AA = FR_X_Prime, FR_E
+ nop.i 999 ;;
+}
+
+{ .mfi
+ ld8 GR_Table_Base = [GR_Table_Base]
+(p0) fmin.s1 FR_BB = FR_X_Prime, FR_E
+ nop.i 999
+}
+
+{ .mfb
+ nop.m 999
+(p0) fadd.s1 FR_W = FR_X_Prime, FR_Em1
+//
+// Begin load of constants base
+// FR_Z = Z = |x| + E
+// FR_W = W = |x| + Em1
+// AA = fmax(|x|,E)
+// BB = fmin(|x|,E)
+//
+(p6) br.cond.spnt L(LOG_64_special) ;;
+}
+
+{ .mib
+ nop.m 999
+ nop.i 999
+(p10) br.cond.spnt L(LOG_64_unsupported) ;;
+}
+
+{ .mib
+ nop.m 999
+ nop.i 999
+(p13) br.cond.spnt L(LOG_64_negative) ;;
+}
+
+{ .mib
+(p0) getf.sig GR_signif = FR_Z
+ nop.i 999
+(p9) br.cond.spnt L(LOG_64_one) ;;
+}
+
+{ .mib
+ nop.m 999
+ nop.i 999
+(p8) br.cond.spnt L(LOG_64_zero) ;;
+}
+
+{ .mfi
+(p0) getf.exp GR_N = FR_Z
+//
+// Raise possible denormal operand exception
+// Create Bias
+//
+// This function computes ln( x + e )
+// Input FR 1: FR_X = FR_Input_X
+// Input FR 2: FR_E = FR_E
+// Input FR 3: FR_Em1 = FR_Em1
+// Input GR 1: GR_Expo_Range = GR_Expo_Range = 1
+// Output FR 4: FR_Y_hi
+// Output FR 5: FR_Y_lo
+// Output FR 6: FR_Scale
+// Output PR 7: PR_Safe
+//
+(p0) fsub.s1 FR_S_lo = FR_AA, FR_Z
+//
+// signif = getf.sig(Z)
+// abs_W = fabs(w)
+//
+(p0) extr.u GR_Table_ptr = GR_signif, 59, 4 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fmerge.se FR_S_hi = f1,FR_Z
+(p0) extr.u GR_X_0 = GR_signif, 49, 15
+}
+
+{ .mmi
+ nop.m 999
+(p0) addl GR_Table_Base1 = @ltoff(Constants_Z_G_H_h2#),gp
+ nop.i 999
+}
+;;
+
+{ .mlx
+ ld8 GR_Table_Base1 = [GR_Table_Base1]
+(p0) movl GR_Bias = 0x000000000000FFFF ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fabs FR_abs_W = FR_W
+(p0) pmpyshr2.u GR_Table_ptr = GR_Table_ptr,GR_Table_Scale,0
+}
+
+{ .mfi
+ nop.m 999
+//
+// Branch out for special input values
+//
+(p0) fcmp.lt.unc.s0 p8, p0 = FR_Input_X, f0
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// X_0 = extr.u(signif,49,15)
+// Index1 = extr.u(signif,59,4)
+//
+(p0) fadd.s1 FR_S_lo = FR_S_lo, FR_BB
+ nop.i 999 ;;
+}
+
+{ .mii
+ nop.m 999
+ nop.i 999 ;;
+//
+// Offset_to_Z1 = 24 * Index1
+// For performance, don't use result
+// for 3 or 4 cycles.
+//
+(p0) add GR_Table_ptr = GR_Table_ptr, GR_Table_Base ;;
+}
+//
+// Add Base to Offset for Z1
+// Create Bias
+
+{ .mmi
+(p0) ld4 GR_Z_1 = [GR_Table_ptr],4 ;;
+(p0) ldfs FR_G = [GR_Table_ptr],4
+ nop.i 999 ;;
+}
+
+{ .mmi
+(p0) ldfs FR_H = [GR_Table_ptr],8 ;;
+(p0) ldfd FR_h = [GR_Table_ptr],0
+(p0) pmpyshr2.u GR_X_1 = GR_X_0,GR_Z_1,15
+}
+//
+// Load Z_1
+// Get Base of Table2
+//
+
+{ .mfi
+(p0) getf.exp GR_M = FR_abs_W
+ nop.f 999
+ nop.i 999 ;;
+}
+
+{ .mii
+ nop.m 999
+ nop.i 999 ;;
+//
+// M = getf.exp(abs_W)
+// S_lo = AA - Z
+// X_1 = pmpyshr2(X_0,Z_1,15)
+//
+(p0) sub GR_M = GR_M, GR_Bias ;;
+}
+//
+// M = M - Bias
+// Load G1
+// N = getf.exp(Z)
+//
+
+{ .mii
+(p0) cmp.gt.unc p11, p0 = -80, GR_M
+(p0) cmp.gt.unc p12, p0 = -7, GR_M ;;
+(p0) extr.u GR_Index2 = GR_X_1, 6, 4 ;;
+}
+
+{ .mib
+ nop.m 999
+//
+// if -80 > M, set p11
+// Index2 = extr.u(X_1,6,4)
+// if -7 > M, set p12
+// Load H1
+//
+(p0) pmpyshr2.u GR_Index2 = GR_Index2,GR_Table_Scale,0
+(p11) br.cond.spnt L(log1p_small) ;;
+}
+
+{ .mib
+ nop.m 999
+ nop.i 999
+(p12) br.cond.spnt L(log1p_near) ;;
+}
+
+{ .mii
+(p0) sub GR_N = GR_N, GR_Bias
+//
+// poly_lo = r * poly_lo
+//
+(p0) add GR_Perturb = 0x1, r0 ;;
+(p0) sub GR_ScaleN = GR_Bias, GR_N
+}
+
+{ .mii
+(p0) setf.sig FR_float_N = GR_N
+ nop.i 999 ;;
+//
+// Prepare Index2 - pmpyshr2.u(X_1,Z_2,15)
+// Load h1
+// S_lo = S_lo + BB
+// Branch for -80 > M
+//
+(p0) add GR_Index2 = GR_Index2, GR_Table_Base1
+}
+
+{ .mmi
+(p0) setf.exp FR_two_negN = GR_ScaleN
+ nop.m 999
+(p0) addl GR_Table_Base = @ltoff(Constants_Z_G_H_h3#),gp
+};;
+
+//
+// Index2 points to Z2
+// Branch for -7 > M
+//
+
+{ .mmb
+(p0) ld4 GR_Z_2 = [GR_Index2],4
+ ld8 GR_Table_Base = [GR_Table_Base]
+ nop.b 999 ;;
+}
+(p0) nop.i 999
+//
+// Load Z_2
+// N = N - Bias
+// Tablebase points to Table3
+//
+
+{ .mmi
+(p0) ldfs FR_G_tmp = [GR_Index2],4 ;;
+//
+// Load G_2
+// pmpyshr2 X_2= (X_1,Z_2,15)
+// float_N = setf.sig(N)
+// ScaleN = Bias - N
+//
+(p0) ldfs FR_H_tmp = [GR_Index2],8
+ nop.i 999 ;;
+}
+//
+// Load H_2
+// two_negN = setf.exp(scaleN)
+// G = G_1 * G_2
+//
+
+{ .mfi
+(p0) ldfd FR_h_tmp = [GR_Index2],0
+ nop.f 999
+(p0) pmpyshr2.u GR_X_2 = GR_X_1,GR_Z_2,15 ;;
+}
+
+{ .mii
+ nop.m 999
+(p0) extr.u GR_Index3 = GR_X_2, 1, 5 ;;
+//
+// Load h_2
+// H = H_1 + H_2
+// h = h_1 + h_2
+// Index3 = extr.u(X_2,1,5)
+//
+(p0) shladd GR_Index3 = GR_Index3,4,GR_Table_Base
+}
+
+{ .mmi
+ nop.m 999
+ nop.m 999
+//
+// float_N = fcvt.xf(float_N)
+// load G3
+//
+(p0) addl GR_Table_Base = @ltoff(Constants_Q#),gp ;;
+}
+
+{ .mfi
+ld8 GR_Table_Base = [GR_Table_Base]
+nop.f 999
+nop.i 999
+} ;;
+
+{ .mfi
+(p0) ldfe FR_log2_hi = [GR_Table_Base],16
+(p0) fmpy.s1 FR_S_lo = FR_S_lo, FR_two_negN
+ nop.i 999 ;;
+}
+
+{ .mmf
+ nop.m 999
+//
+// G = G3 * G
+// Load h3
+// Load log2_hi
+// H = H + H3
+//
+(p0) ldfe FR_log2_lo = [GR_Table_Base],16
+(p0) fmpy.s1 FR_G = FR_G, FR_G_tmp ;;
+}
+
+{ .mmf
+(p0) ldfs FR_G_tmp = [GR_Index3],4
+//
+// h = h + h3
+// r = G * S_hi + 1
+// Load log2_lo
+//
+(p0) ldfe FR_Q4 = [GR_Table_Base],16
+(p0) fadd.s1 FR_h = FR_h, FR_h_tmp ;;
+}
+
+{ .mfi
+(p0) ldfe FR_Q3 = [GR_Table_Base],16
+(p0) fadd.s1 FR_H = FR_H, FR_H_tmp
+ nop.i 999 ;;
+}
+
+{ .mmf
+(p0) ldfs FR_H_tmp = [GR_Index3],4
+(p0) ldfe FR_Q2 = [GR_Table_Base],16
+//
+// Comput Index for Table3
+// S_lo = S_lo * two_negN
+//
+(p0) fcvt.xf FR_float_N = FR_float_N ;;
+}
+//
+// If S_lo == 0, set p8 false
+// Load H3
+// Load ptr to table of polynomial coeff.
+//
+
+{ .mmf
+(p0) ldfd FR_h_tmp = [GR_Index3],0
+(p0) ldfe FR_Q1 = [GR_Table_Base],0
+(p0) fcmp.eq.unc.s1 p0, p8 = FR_S_lo, f0 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fmpy.s1 FR_G = FR_G, FR_G_tmp
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fadd.s1 FR_H = FR_H, FR_H_tmp
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fms.s1 FR_r = FR_G, FR_S_hi, f1
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fadd.s1 FR_h = FR_h, FR_h_tmp
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_hi = FR_float_N, FR_log2_hi, FR_H
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// Load Q4
+// Load Q3
+// Load Q2
+// Load Q1
+//
+(p8) fma.s1 FR_r = FR_G, FR_S_lo, FR_r
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+//
+// poly_lo = r * Q4 + Q3
+// rsq = r* r
+//
+(p0) fma.s1 FR_h = FR_float_N, FR_log2_lo, FR_h
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// If (S_lo!=0) r = s_lo * G + r
+//
+(p0) fma.s1 FR_poly_lo = FR_r, FR_Q4, FR_Q3
+ nop.i 999
+}
+//
+// Create a 0x00000....01
+// poly_lo = poly_lo * rsq + h
+//
+
+{ .mfi
+(p0) setf.sig FR_dummy = GR_Perturb
+(p0) fmpy.s1 FR_rsq = FR_r, FR_r
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// h = N * log2_lo + h
+// Y_hi = n * log2_hi + H
+//
+(p0) fma.s1 FR_poly_lo = FR_poly_lo, FR_r, FR_Q2
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_poly_hi = FR_Q1, FR_rsq, FR_r
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// poly_lo = r * poly_o + Q2
+// poly_hi = Q1 * rsq + r
+//
+(p0) fmpy.s1 FR_poly_lo = FR_poly_lo, FR_r
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_poly_lo = FR_poly_lo, FR_rsq, FR_h
+ nop.i 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p0) fadd.s1 FR_Y_lo = FR_poly_hi, FR_poly_lo
+//
+// Create the FR for a binary "or"
+// Y_lo = poly_hi + poly_lo
+//
+// (p0) for FR_dummy = FR_Y_lo,FR_dummy ;;
+//
+// Turn the lsb of Y_lo ON
+//
+// (p0) fmerge.se FR_Y_lo = FR_Y_lo,FR_dummy ;;
+//
+// Merge the new lsb into Y_lo, for alone doesn't
+//
+(p0) br.cond.sptk L(LOG_main) ;;
+}
+
+
+L(log1p_near):
+
+{ .mmi
+ nop.m 999
+ nop.m 999
+// /*******************************************************/
+// /*********** Branch log1p_near ************************/
+// /*******************************************************/
+(p0) addl GR_Table_Base = @ltoff(Constants_P#),gp ;;
+}
+//
+// Load base address of poly. coeff.
+//
+{.mmi
+ nop.m 999
+ ld8 GR_Table_Base = [GR_Table_Base]
+ nop.i 999
+};;
+
+{ .mmb
+(p0) add GR_Table_ptr = 0x40,GR_Table_Base
+//
+// Address tables with separate pointers
+//
+(p0) ldfe FR_P8 = [GR_Table_Base],16
+ nop.b 999 ;;
+}
+
+{ .mmb
+(p0) ldfe FR_P4 = [GR_Table_ptr],16
+//
+// Load P4
+// Load P8
+//
+(p0) ldfe FR_P7 = [GR_Table_Base],16
+ nop.b 999 ;;
+}
+
+{ .mmf
+(p0) ldfe FR_P3 = [GR_Table_ptr],16
+//
+// Load P3
+// Load P7
+//
+(p0) ldfe FR_P6 = [GR_Table_Base],16
+(p0) fmpy.s1 FR_wsq = FR_W, FR_W ;;
+}
+
+{ .mfi
+(p0) ldfe FR_P2 = [GR_Table_ptr],16
+ nop.f 999
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_hi = FR_W, FR_P4, FR_P3
+ nop.i 999
+}
+//
+// Load P2
+// Load P6
+// Wsq = w * w
+// Y_hi = p4 * w + p3
+//
+
+{ .mfi
+(p0) ldfe FR_P5 = [GR_Table_Base],16
+(p0) fma.s1 FR_Y_lo = FR_W, FR_P8, FR_P7
+ nop.i 999 ;;
+}
+
+{ .mfi
+(p0) ldfe FR_P1 = [GR_Table_ptr],16
+//
+// Load P1
+// Load P5
+// Y_lo = p8 * w + P7
+//
+(p0) fmpy.s1 FR_w4 = FR_wsq, FR_wsq
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_hi = FR_W, FR_Y_hi, FR_P2
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_lo = FR_W, FR_Y_lo, FR_P6
+(p0) add GR_Perturb = 0x1, r0 ;;
+}
+
+{ .mfi
+ nop.m 999
+//
+// w4 = w2 * w2
+// Y_hi = y_hi * w + p2
+// Y_lo = y_lo * w + p6
+// Create perturbation bit
+//
+(p0) fmpy.s1 FR_w6 = FR_w4, FR_wsq
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_hi = FR_W, FR_Y_hi, FR_P1
+ nop.i 999
+}
+//
+// Y_hi = y_hi * w + p1
+// w6 = w4 * w2
+//
+
+{ .mfi
+(p0) setf.sig FR_Q4 = GR_Perturb
+(p0) fma.s1 FR_Y_lo = FR_W, FR_Y_lo, FR_P5
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fma.s1 FR_Y_hi = FR_wsq,FR_Y_hi, FR_W
+ nop.i 999
+}
+
+{ .mfb
+ nop.m 999
+//
+// Y_hi = y_hi * wsq + w
+// Y_lo = y_lo * w + p5
+//
+(p0) fmpy.s1 FR_Y_lo = FR_w6, FR_Y_lo
+//
+// Y_lo = y_lo * w6
+//
+// (p0) for FR_dummy = FR_Y_lo,FR_dummy ;;
+//
+// Set lsb on: Taken out to improve performance
+//
+// (p0) fmerge.se FR_Y_lo = FR_Y_lo,FR_dummy ;;
+//
+// Make sure it's on in Y_lo also. Taken out to improve
+// performance
+//
+(p0) br.cond.sptk L(LOG_main) ;;
+}
+
+
+L(log1p_small):
+
+{ .mmi
+ nop.m 999
+ nop.m 999
+// /*******************************************************/
+// /*********** Branch log1p_small ***********************/
+// /*******************************************************/
+(p0) addl GR_Table_Base = @ltoff(Constants_Threshold#),gp
+}
+
+{ .mfi
+ nop.m 999
+(p0) mov FR_Em1 = FR_W
+(p0) cmp.eq.unc p7, p0 = r0, r0 ;;
+}
+
+{ .mlx
+ ld8 GR_Table_Base = [GR_Table_Base]
+(p0) movl GR_Expo_Range = 0x0000000000000002 ;;
+}
+//
+// Set Safe to true
+// Set Expo_Range = 0 for single
+// Set Expo_Range = 2 for double
+// Set Expo_Range = 4 for double-extended
+//
+
+{ .mmi
+(p0) shladd GR_Table_Base = GR_Expo_Range,4,GR_Table_Base ;;
+(p0) ldfe FR_Threshold = [GR_Table_Base],16
+ nop.i 999
+}
+
+{ .mlx
+ nop.m 999
+(p0) movl GR_Bias = 0x000000000000FF9B ;;
+}
+
+{ .mfi
+(p0) ldfe FR_Tiny = [GR_Table_Base],0
+ nop.f 999
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fcmp.gt.unc.s1 p13, p12 = FR_abs_W, FR_Threshold
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p13) fnmpy.s1 FR_Y_lo = FR_W, FR_W
+ nop.i 999
+}
+
+{ .mfi
+ nop.m 999
+(p13) fadd FR_SCALE = f0, f1
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p12) fsub.s1 FR_Y_lo = f0, FR_Tiny
+(p12) cmp.ne.unc p7, p0 = r0, r0
+}
+
+{ .mfi
+(p12) setf.exp FR_SCALE = GR_Bias
+ nop.f 999
+ nop.i 999 ;;
+}
+
+//
+// Set p7 to SAFE = FALSE
+// Set Scale = 2^-100
+//
+{ .mfb
+ nop.m 999
+(p0) fma.d.s0 FR_Input_X = FR_Y_lo,FR_SCALE,FR_Y_hi
+(p0) br.ret.sptk b0
+}
+;;
+
+L(LOG_64_one):
+
+{ .mfb
+ nop.m 999
+(p0) fmpy.d.s0 FR_Input_X = FR_Input_X, f0
+(p0) br.ret.sptk b0
+}
+;;
+
+//
+// Raise divide by zero for +/-0 input.
+//
+L(LOG_64_zero):
+
+{ .mfi
+(p0) mov GR_Parameter_TAG = 140
+//
+// If we have log1p(0), return -Inf.
+//
+(p0) fsub.s0 FR_Output_X_tmp = f0, f1
+ nop.i 999 ;;
+}
+{ .mfb
+ nop.m 999
+(p0) frcpa.s0 FR_Output_X_tmp, p8 = FR_Output_X_tmp, f0
+(p0) br.cond.sptk L(LOG_ERROR_Support) ;;
+}
+
+L(LOG_64_special):
+
+{ .mfi
+ nop.m 999
+//
+// Return -Inf or value from handler.
+//
+(p0) fclass.m.unc p7, p0 = FR_Input_X, 0x1E1
+ nop.i 999 ;;
+}
+{ .mfb
+ nop.m 999
+//
+// Check for Natval, QNan, SNaN, +Inf
+//
+(p7) fmpy.d.s0 f8 = FR_Input_X, f1
+//
+// For SNaN raise invalid and return QNaN.
+// For QNaN raise invalid and return QNaN.
+// For +Inf return +Inf.
+//
+(p7) br.ret.sptk b0
+}
+;;
+
+//
+// For -Inf raise invalid and return QNaN.
+//
+
+{ .mfb
+(p0) mov GR_Parameter_TAG = 141
+(p0) fmpy.d.s0 FR_Output_X_tmp = FR_Input_X, f0
+(p0) br.cond.sptk L(LOG_ERROR_Support) ;;
+}
+
+//
+// Report that log1p(-Inf) computed
+//
+
+L(LOG_64_unsupported):
+
+//
+// Return generated NaN or other value .
+//
+
+{ .mfb
+ nop.m 999
+(p0) fmpy.d.s0 FR_Input_X = FR_Input_X, f0
+(p0) br.ret.sptk b0 ;;
+}
+
+L(LOG_64_negative):
+
+{ .mfi
+ nop.m 999
+//
+// Deal with x < 0 in a special way
+//
+(p0) frcpa.s0 FR_Output_X_tmp, p8 = f0, f0
+//
+// Deal with x < 0 in a special way - raise
+// invalid and produce QNaN indefinite.
+//
+(p0) mov GR_Parameter_TAG = 141
+}
+
+.endp log1p#
+ASM_SIZE_DIRECTIVE(log1p)
+
+.proc __libm_error_region
+__libm_error_region:
+L(LOG_ERROR_Support):
+.prologue
+
+// (1)
+{ .mfi
+ add GR_Parameter_Y=-32,sp // Parameter 2 value
+ nop.f 0
+.save ar.pfs,GR_SAVE_PFS
+ mov GR_SAVE_PFS=ar.pfs // Save ar.pfs
+}
+{ .mfi
+.fframe 64
+ add sp=-64,sp // Create new stack
+ nop.f 0
+ mov GR_SAVE_GP=gp // Save gp
+};;
+
+
+// (2)
+{ .mmi
+ stfd [GR_Parameter_Y] = f0,16 // STORE Parameter 2 on stack
+ add GR_Parameter_X = 16,sp // Parameter 1 address
+.save b0, GR_SAVE_B0
+ mov GR_SAVE_B0=b0 // Save b0
+};;
+
+.body
+// (3)
+{ .mib
+ stfd [GR_Parameter_X] =FR_Input_X // STORE Parameter 1 on stack
+ add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address
+ nop.b 0
+}
+{ .mib
+ stfd [GR_Parameter_Y] = FR_Output_X_tmp // STORE Parameter 3 on stack
+ add GR_Parameter_Y = -16,GR_Parameter_Y
+ br.call.sptk b0=__libm_error_support# // Call error handling function
+};;
+{ .mmi
+ nop.m 0
+ nop.m 0
+ add GR_Parameter_RESULT = 48,sp
+};;
+
+// (4)
+{ .mmi
+ ldfd FR_Input_X = [GR_Parameter_RESULT] // Get return result off stack
+.restore sp
+ add sp = 64,sp // Restore stack pointer
+ mov b0 = GR_SAVE_B0 // Restore return address
+};;
+{ .mib
+ mov gp = GR_SAVE_GP // Restore gp
+ mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs
+ br.ret.sptk b0
+};;
+
+.endp __libm_error_region
+ASM_SIZE_DIRECTIVE(__libm_error_region)
+
+.proc __libm_LOG_main
+__libm_LOG_main:
+L(LOG_main):
+
+//
+// kernel_log_64 computes ln(X + E)
+//
+
+{ .mfi
+ nop.m 999
+(p7) fadd.d.s0 FR_Input_X = FR_Y_lo,FR_Y_hi
+ nop.i 999
+}
+
+{ .mmi
+ nop.m 999
+ nop.m 999
+(p14) addl GR_Table_Base = @ltoff(Constants_1_by_LN10#),gp ;;
+}
+
+{ .mmi
+ nop.m 999
+(p14) ld8 GR_Table_Base = [GR_Table_Base]
+ nop.i 999
+};;
+
+{ .mmi
+(p14) ldfe FR_1LN10_hi = [GR_Table_Base],16 ;;
+(p14) ldfe FR_1LN10_lo = [GR_Table_Base]
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p14) fmpy.s1 FR_Output_X_tmp = FR_Y_lo,FR_1LN10_hi
+ nop.i 999 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p14) fma.s1 FR_Output_X_tmp = FR_Y_hi,FR_1LN10_lo,FR_Output_X_tmp
+ nop.i 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p14) fma.d.s0 FR_Input_X = FR_Y_hi,FR_1LN10_hi,FR_Output_X_tmp
+(p0) br.ret.sptk b0 ;;
+}
+.endp __libm_LOG_main
+ASM_SIZE_DIRECTIVE(__libm_LOG_main)
+
+
+.type __libm_error_support#,@function
+.global __libm_error_support#