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+.file "fmodl.s"
+
+// Copyright (c) 2000, 2001, Intel Corporation
+// All rights reserved.
+//
+// Contributed 2/2/2000 by John Harrison, Cristina Iordache, 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
+// 3/02/00 New Algorithm
+// 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.
+//11/28/00 Set FR_Y to f9
+//
+// API
+//====================================================================
+// long double fmodl(long double,long double);
+//
+// Overview of operation
+//====================================================================
+// fmod(a,b)=a-i*b,
+// where i is an integer such that, if b!=0,
+// |i|<|a/b| and |a/b-i|<1
+//
+// Algorithm
+//====================================================================
+// a). if |a|<|b|, return a
+// b). get quotient and reciprocal overestimates accurate to
+// 33 bits (q2,y2)
+// c). if the exponent difference (exponent(a)-exponent(b))
+// is less than 32, truncate quotient to integer and
+// finish in one iteration
+// d). if exponent(a)-exponent(b)>=32 (q2>=2^32)
+// round quotient estimate to single precision (k=RN(q2)),
+// calculate partial remainder (a'=a-k*b),
+// get quotient estimate (a'*y2), and repeat from c).
+//
+// Registers used
+//====================================================================
+// Predicate registers: p6-p11
+// General registers: r2,r29,r32 (ar.pfs), r33-r39
+// Floating point registers: f6-f15
+
+#include "libm_support.h"
+
+.section .text
+
+GR_SAVE_B0 = r33
+GR_SAVE_PFS = r34
+GR_SAVE_GP = r35
+GR_SAVE_SP = r36
+
+GR_Parameter_X = r37
+GR_Parameter_Y = r38
+GR_Parameter_RESULT = r39
+GR_Parameter_TAG = r40
+
+FR_X = f10
+FR_Y = f9
+FR_RESULT = f8
+
+
+
+.proc fmodl#
+.align 32
+.global fmodl#
+.align 32
+
+fmodl:
+#ifdef _LIBC
+.global __ieee754_fmodl
+.type __ieee754_fmodl,@function
+__ieee754_fmodl:
+#endif
+// inputs in f8, f9
+// result in f8
+
+{ .mfi
+ alloc r32=ar.pfs,1,4,4,0
+ // f6=|a|
+ fmerge.s f6=f0,f8
+ mov r2 = 0x0ffdd
+}
+ {.mfi
+ getf.sig r29=f9
+ // f7=|b|
+ fmerge.s f7=f0,f9
+ nop.i 0;;
+}
+
+{ .mfi
+ setf.exp f11 = r2
+ // (1) y0
+ frcpa.s1 f10,p6=f6,f7
+ nop.i 0;;
+}
+
+// eliminate special cases
+{.mmi
+nop.m 0
+nop.m 0
+// y pseudo-zero ?
+cmp.eq p7,p10=r29,r0;;
+}
+
+// Y +-NAN, +-inf, +-0? p7
+{ .mfi
+ nop.m 999
+(p10) fclass.m p7,p10 = f9, 0xe7
+ nop.i 999;;
+}
+
+// qnan snan inf norm unorm 0 -+
+// 1 1 1 0 0 0 11
+// e 3
+// X +-NAN, +-inf, ? p9
+
+{ .mfi
+ nop.m 999
+(p0) fclass.m.unc p9,p11 = f8, 0xe3
+ nop.i 999
+}
+
+// |x| < |y|? Return x p8
+{ .mfi
+ nop.m 999
+(p10) fcmp.lt.unc.s1 p8,p0 = f6,f7
+ nop.i 999 ;;
+}
+
+ { .mfi
+ mov r2=0x1001f
+ // (2) q0=a*y0
+ (p6) fma.s1 f13=f6,f10,f0
+ nop.i 0
+} { .mfi
+ nop.m 0
+ // (3) e0 = 1 - b * y0
+ (p6) fnma.s1 f12=f7,f10,f1
+ nop.i 0;;
+}
+
+// Y +-NAN, +-inf, +-0? p7
+{ .mfi
+ nop.m 999
+ // pseudo-NaN ?
+(p10) fclass.nm p7,p0 = f9, 0xff
+ nop.i 999
+}
+
+// qnan snan inf norm unorm 0 -+
+// 1 1 1 0 0 0 11
+// e 3
+// X +-NAN, +-inf, ? p9
+
+{ .mfi
+ nop.m 999
+(p11) fclass.nm p9,p0 = f8, 0xff
+ nop.i 999;;
+}
+
+{ .mfi
+ nop.m 0
+ // y denormal ? set D flag (if |x|<|y|)
+ (p8) fnma.s0 f10=f9,f1,f9
+ nop.i 0;;
+}
+
+
+{.mfi
+ nop.m 0
+ // normalize x (if |x|<|y|)
+ (p8) fma.s0 f8=f8,f1,f0
+ nop.i 0
+}
+{.bbb
+ (p9) br.cond.spnt L(FMOD_X_NAN_INF)
+ (p7) br.cond.spnt L(FMOD_Y_NAN_INF_ZERO)
+ // if |x|<|y|, return
+ (p8) br.ret.spnt b0;;
+}
+
+ {.mfi
+ nop.m 0
+ // x denormal ? set D flag
+ fnma.s0 f32=f6,f1,f6
+ nop.i 0
+}
+{.mfi
+ nop.m 0
+ // y denormal ? set D flag
+ fnma.s0 f33=f7,f1,f7
+ nop.i 0;;
+}
+
+ {.mfi
+ // f15=2^32
+ setf.exp f15=r2
+ // (4) q1=q0+e0*q0
+ (p6) fma.s1 f13=f12,f13,f13
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ // (5) e1 = e0 * e0 + 2^-34
+ (p6) fma.s1 f14=f12,f12,f11
+ nop.i 0;;
+}
+{.mlx
+ nop.m 0
+ movl r2=0x33a00000;;
+}
+{ .mfi
+ nop.m 0
+ // (6) y1 = y0 + e0 * y0
+ (p6) fma.s1 f10=f12,f10,f10
+ nop.i 0;;
+}
+{.mfi
+ // set f12=1.25*2^{-24}
+ setf.s f12=r2
+ // (7) q2=q1+e1*q1
+ (p6) fma.s1 f13=f13,f14,f13
+ nop.i 0;;
+}
+{.mfi
+ nop.m 0
+ fmerge.s f9=f8,f9
+ nop.i 0
+}
+{ .mfi
+ nop.m 0
+ // (8) y2 = y1 + e1 * y1
+ (p6) fma.s1 f10=f14,f10,f10
+ // set p6=0, p10=0
+ cmp.ne.and p6,p10=r0,r0;;
+}
+
+
+.align 32
+L(loop64):
+ {.mfi
+ nop.m 0
+ // compare q2, 2^32
+ fcmp.lt.unc.s1 p8,p7=f13,f15
+ nop.i 0
+}
+ {.mfi
+ nop.m 0
+ // will truncate quotient to integer, if exponent<32 (in advance)
+ fcvt.fx.trunc.s1 f11=f13
+ nop.i 0;;
+}
+ {.mfi
+ nop.m 0
+ // if exponent>32, round quotient to single precision (perform in advance)
+ fma.s.s1 f13=f13,f1,f0
+ nop.i 0;;
+}
+
+
+ {.mfi
+ nop.m 0
+ // set f12=sgn(a)
+ (p8) fmerge.s f12=f8,f1
+ nop.i 0
+}
+ {.mfi
+ nop.m 0
+ // normalize truncated quotient
+ (p8) fcvt.xf f13=f11
+ nop.i 0;;
+}
+ { .mfi
+ nop.m 0
+ // calculate remainder (assuming f13=RZ(Q))
+ (p7) fnma.s1 f14=f13,f7,f6
+ nop.i 0
+}
+ {.mfi
+ nop.m 0
+ // also if exponent>32, round quotient to single precision
+ // and subtract 1 ulp: q=q-q*(1.25*2^{-24})
+ (p7) fnma.s.s1 f11=f13,f12,f13
+ nop.i 0;;
+}
+
+ {.mfi
+ nop.m 0
+ // (p8) calculate remainder (82-bit format)
+ (p8) fnma.s1 f11=f13,f7,f6
+ nop.i 0
+}
+ {.mfi
+ nop.m 0
+ // (p7) calculate remainder (assuming f11=RZ(Q))
+ (p7) fnma.s1 f6=f11,f7,f6
+ nop.i 0;;
+}
+
+
+ {.mfi
+ nop.m 0
+ // Final iteration (p8): is f6 the correct remainder (quotient was not overestimated) ?
+ (p8) fcmp.lt.unc.s1 p6,p10=f11,f0
+ nop.i 0;;
+}
+ {.mfi
+ nop.m 0
+ // get new quotient estimation: a'*y2
+ (p7) fma.s1 f13=f14,f10,f0
+ nop.i 0
+}
+ {.mfb
+ nop.m 0
+ // was f13=RZ(Q) ? (then new remainder f14>=0)
+ (p7) fcmp.lt.unc.s1 p7,p9=f14,f0
+ nop.b 0;;
+}
+
+
+.pred.rel "mutex",p6,p10
+ {.mfb
+ nop.m 0
+ // add b to estimated remainder (to cover the case when the quotient was overestimated)
+ // also set correct sign by using f9=|b|*sgn(a), f12=sgn(a)
+ (p6) fma.s0 f8=f11,f12,f9
+ nop.b 0
+}
+ {.mfb
+ nop.m 0
+ // set correct sign of result before returning: f12=sgn(a)
+ (p10) fma.s0 f8=f11,f12,f0
+ (p8) br.ret.sptk b0;;
+}
+ {.mfi
+ nop.m 0
+ // if f13!=RZ(Q), get alternative quotient estimation: a''*y2
+ (p7) fma.s1 f13=f6,f10,f0
+ nop.i 0
+}
+ {.mfb
+ nop.m 0
+ // if f14 was RZ(Q), set remainder to f14
+ (p9) mov f6=f14
+ br.cond.sptk L(loop64);;
+}
+
+
+
+L(FMOD_X_NAN_INF):
+
+// Y zero ?
+{.mfi
+ nop.m 0
+ fma.s1 f10=f9,f1,f0
+ nop.i 0;;
+}
+{.mfi
+ nop.m 0
+ fcmp.eq.unc.s1 p11,p0=f10,f0
+ nop.i 0;;
+}
+{.mib
+ nop.m 0
+ nop.i 0
+ // if Y zero
+ (p11) br.cond.spnt L(FMOD_Y_ZERO);;
+}
+
+// X infinity? Return QNAN indefinite
+{ .mfi
+ // set p7 t0 0
+ cmp.ne p7,p0=r0,r0
+(p0) fclass.m.unc p8,p9 = f8, 0x23
+ nop.i 999;;
+}
+// Y NaN ?
+{.mfi
+ nop.m 999
+(p8) fclass.m p9,p8=f9,0xc3
+ nop.i 0;;
+}
+// Y not pseudo-zero ? (r29 holds significand)
+{.mii
+ nop.m 999
+(p8) cmp.ne p7,p0=r29,r0
+ nop.i 0;;
+}
+{.mfi
+ nop.m 999
+(p8) frcpa.s0 f8,p0 = f8,f8
+ nop.i 0
+}
+{ .mfi
+ nop.m 999
+ // also set Denormal flag if necessary
+(p7) fnma.s0 f9=f9,f1,f9
+ nop.i 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p8) fma.s0 f8=f8,f1,f0
+ nop.b 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p9) frcpa.s0 f8,p7=f8,f9
+ br.ret.sptk b0 ;;
+}
+
+
+L(FMOD_Y_NAN_INF_ZERO):
+// Y INF
+{ .mfi
+ nop.m 999
+(p0) fclass.m.unc p7,p0 = f9, 0x23
+ nop.i 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p7) fma f8=f8,f1,f0
+(p7) br.ret.spnt b0 ;;
+}
+
+// Y NAN?
+{ .mfi
+ nop.m 999
+(p0) fclass.m.unc p9,p10 = f9, 0xc3
+ nop.i 999 ;;
+}
+{ .mfi
+ nop.m 999
+(p10) fclass.nm p9,p0 = f9, 0xff
+ nop.i 999 ;;
+}
+
+{ .mfb
+ nop.m 999
+(p9) fma f8=f9,f1,f0
+(p9) br.ret.spnt b0 ;;
+}
+
+L(FMOD_Y_ZERO):
+// Y zero? Must be zero at this point
+// because it is the only choice left.
+// Return QNAN indefinite
+
+{.mfi
+ nop.m 0
+ // set Invalid
+ frcpa f12,p0=f0,f0
+ nop.i 0
+}
+// X NAN?
+{ .mfi
+ nop.m 999
+(p0) fclass.m.unc p9,p10 = f8, 0xc3
+ nop.i 999 ;;
+}
+{ .mfi
+ nop.m 999
+(p10) fclass.nm p9,p10 = f8, 0xff
+ nop.i 999 ;;
+}
+
+{.mfi
+ nop.m 999
+ (p9) frcpa f11,p7=f8,f0
+ nop.i 0;;
+}
+
+
+{ .mfi
+ nop.m 999
+(p10) frcpa f11,p7 = f9,f9
+(p0) mov GR_Parameter_TAG = 120 ;;
+}
+
+{ .mfi
+ nop.m 999
+(p0) fmerge.s f10 = f8, f8
+ nop.i 999
+}
+
+{ .mfb
+ nop.m 999
+(p0) fma f8=f11,f1,f0
+(p0) br.sptk __libm_error_region;;
+}
+
+.endp fmodl
+ASM_SIZE_DIRECTIVE(fmodl)
+ASM_SIZE_DIRECTIVE(__ieee754_fmodl)
+
+
+.proc __libm_error_region
+__libm_error_region:
+.prologue
+{ .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
+};;
+{ .mmi
+ stfe [GR_Parameter_Y] = FR_Y,16 // Save 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
+{ .mib
+ stfe [GR_Parameter_X] = FR_X // Store Parameter 1 on stack
+ add GR_Parameter_RESULT = 0,GR_Parameter_Y
+ nop.b 0 // Parameter 3 address
+}
+{ .mib
+ stfe [GR_Parameter_Y] = FR_RESULT // 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
+};;
+{ .mmi
+ ldfe f8 = [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 // Return
+};;
+
+.endp __libm_error_region
+ASM_SIZE_DIRECTIVE(__libm_error_region)
+
+
+
+.type __libm_error_support#,@function
+.global __libm_error_support#