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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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treeaa219472cc41fcb82789b12723628cb6a33cc774 /sysdeps/ia64/fpu/s_rint.S
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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_rint.S')
-rw-r--r--sysdeps/ia64/fpu/s_rint.S241
1 files changed, 241 insertions, 0 deletions
diff --git a/sysdeps/ia64/fpu/s_rint.S b/sysdeps/ia64/fpu/s_rint.S
new file mode 100644
index 0000000000..fd99e8ebc8
--- /dev/null
+++ b/sysdeps/ia64/fpu/s_rint.S
@@ -0,0 +1,241 @@
+.file "rint.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
+// 2/08/01 Corrected behavior for all rounding modes.
+//
+// API
+//==============================================================
+// double rint(double x)
+
+#include "libm_support.h"
+
+//
+// general registers used:
+//
+rint_GR_FFFF = r14
+rint_GR_signexp = r15
+rint_GR_exponent = r16
+rint_GR_17ones = r17
+rint_GR_10033 = r18
+rint_GR_fpsr = r19
+rint_GR_rcs0 = r20
+rint_GR_rcs0_mask = r21
+
+
+// predicate registers used:
+// p6-11
+
+// floating-point registers used:
+
+RINT_NORM_f8 = f9
+RINT_FFFF = f10
+RINT_INEXACT = f11
+RINT_FLOAT_INT_f8 = f12
+RINT_INT_f8 = f13
+
+// Overview of operation
+//==============================================================
+
+// double rint(double x)
+// Return an integer value (represented as a double) that is x rounded to integer in current
+// rounding mode
+// Inexact is set if x != rint(x)
+// *******************************************************************************
+
+// Set denormal flag for denormal input and
+// and take denormal fault if necessary.
+
+// Is the input an integer value already?
+
+// double_extended
+// if the exponent is >= 1003e => 3F(true) = 63(decimal)
+// we have a significand of 64 bits 1.63-bits.
+// If we multiply by 2^63, we no longer have a fractional part
+// So input is an integer value already.
+
+// double
+// if the exponent is >= 10033 => 34(true) = 52(decimal)
+// 34 + 3ff = 433
+// we have a significand of 53 bits 1.52-bits. (implicit 1)
+// If we multiply by 2^52, we no longer have a fractional part
+// So input is an integer value already.
+
+// single
+// if the exponent is >= 10016 => 17(true) = 23(decimal)
+// we have a significand of 53 bits 1.52-bits. (implicit 1)
+// If we multiply by 2^52, we no longer have a fractional part
+// So input is an integer value already.
+
+// If x is NAN, ZERO, or INFINITY, then return
+
+// qnan snan inf norm unorm 0 -+
+// 1 1 1 0 0 1 11 0xe7
+
+
+.align 32
+.global rint#
+
+.section .text
+.proc rint#
+.align 32
+
+
+rint:
+#ifdef _LIBC
+.global __rint
+.type __rint,@function
+__rint:
+#endif
+
+{ .mfi
+ mov rint_GR_fpsr = ar40 // Read the fpsr--need to check rc.s0
+ fcvt.fx.s1 RINT_INT_f8 = f8
+ addl rint_GR_10033 = 0x10033, r0
+}
+{ .mfi
+ mov rint_GR_FFFF = -1
+ fnorm.s1 RINT_NORM_f8 = f8
+ mov rint_GR_17ones = 0x1FFFF
+;;
+}
+
+{ .mfi
+ setf.sig RINT_FFFF = rint_GR_FFFF
+ fclass.m.unc p6,p0 = f8, 0xe7
+ mov rint_GR_rcs0_mask = 0x0c00
+;;
+}
+
+{ .mfb
+ nop.m 999
+(p6) fnorm.d f8 = f8
+(p6) br.ret.spnt b0 // Exit if x nan, inf, zero
+;;
+}
+
+{ .mfi
+ nop.m 999
+ fcvt.xf RINT_FLOAT_INT_f8 = RINT_INT_f8
+ nop.i 999
+;;
+}
+
+{ .mfi
+ getf.exp rint_GR_signexp = RINT_NORM_f8
+ fcmp.eq.s0 p8,p0 = f8,f0 // Dummy op to set denormal
+ nop.i 999
+;;
+}
+
+
+{ .mii
+ nop.m 999
+ nop.i 999
+ and rint_GR_exponent = rint_GR_signexp, rint_GR_17ones
+;;
+}
+
+{ .mmi
+ cmp.ge.unc p7,p6 = rint_GR_exponent, rint_GR_10033
+ and rint_GR_rcs0 = rint_GR_rcs0_mask, rint_GR_fpsr
+ nop.i 999
+;;
+}
+
+// Check to see if s0 rounding mode is round to nearest. If not then set s2
+// rounding mode to that of s0 and repeat conversions.
+L(RINT_COMMON):
+{ .mfb
+ cmp.ne p11,p0 = rint_GR_rcs0, r0
+(p6) fclass.m.unc p9,p10 = RINT_FLOAT_INT_f8, 0x07 // Test for result=0
+(p11) br.cond.spnt L(RINT_NOT_ROUND_NEAREST) // Branch if not round to nearest
+;;
+}
+
+{ .mfi
+ nop.m 999
+(p6) fcmp.eq.unc.s1 p0,p8 = RINT_FLOAT_INT_f8, RINT_NORM_f8
+ nop.i 999
+}
+{ .mfi
+ nop.m 999
+(p7) fnorm.d.s0 f8 = f8
+ nop.i 999
+;;
+}
+
+// If result is zero, merge sign of input
+{ .mfi
+ nop.m 999
+(p9) fmerge.s f8 = f8, RINT_FLOAT_INT_f8
+ nop.i 999
+}
+{ .mfi
+ nop.m 999
+(p10) fnorm.d f8 = RINT_FLOAT_INT_f8
+ nop.i 999
+;;
+}
+
+{ .mfb
+ nop.m 999
+(p8) fmpy.s0 RINT_INEXACT = RINT_FFFF,RINT_FFFF // Dummy to set inexact
+ br.ret.sptk b0
+;;
+}
+
+L(RINT_NOT_ROUND_NEAREST):
+// Set rounding mode of s2 to that of s0
+{ .mfi
+ mov rint_GR_rcs0 = r0 // Clear so we don't come back here
+ fsetc.s2 0x7f, 0x40
+ nop.i 999
+;;
+}
+
+{ .mfi
+ nop.m 999
+ fcvt.fx.s2 RINT_INT_f8 = f8
+ nop.i 999
+;;
+}
+
+{ .mfb
+ nop.m 999
+ fcvt.xf RINT_FLOAT_INT_f8 = RINT_INT_f8
+ br.cond.sptk L(RINT_COMMON)
+;;
+}
+
+
+.endp rint
+ASM_SIZE_DIRECTIVE(rint)
+#ifdef _LIBC
+ASM_SIZE_DIRECTIVE(__rint)
+#endif