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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
| commit | 73df946d56c74384511a194dd01dbe099584fd1a (patch) | |
| tree | fd0bcea490dd81327ddfbb31e215439672c9a068 /src/math/frexp_386.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip | |
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/math/frexp_386.s')
| -rw-r--r-- | src/math/frexp_386.s | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/math/frexp_386.s b/src/math/frexp_386.s new file mode 100644 index 0000000..832b435 --- /dev/null +++ b/src/math/frexp_386.s @@ -0,0 +1,25 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" + +// func Frexp(f float64) (frac float64, exp int) +TEXT ·Frexp(SB),NOSPLIT,$0 + FMOVD f+0(FP), F0 // F0=f + FXAM + FSTSW AX + SAHF + JNP nan_zero_inf + JCS nan_zero_inf + FXTRACT // F0=f (0<=f<1), F1=e + FMULD $(0.5), F0 // F0=f (0.5<=f<1), F1=e + FMOVDP F0, frac+8(FP) // F0=e + FLD1 // F0=1, F1=e + FADDDP F0, F1 // F0=e+1 + FMOVLP F0, exp+16(FP) // (int=int32) + RET +nan_zero_inf: + FMOVDP F0, frac+8(FP) // F0=e + MOVL $0, exp+16(FP) // exp=0 + RET |