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Diffstat (limited to 'src/pkg/math/exp_386.s')
-rw-r--r-- | src/pkg/math/exp_386.s | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/src/pkg/math/exp_386.s b/src/pkg/math/exp_386.s deleted file mode 100644 index af2d680d5..000000000 --- a/src/pkg/math/exp_386.s +++ /dev/null @@ -1,41 +0,0 @@ -// 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 "../../cmd/ld/textflag.h" - -// func Exp(x float64) float64 -TEXT ·Exp(SB),NOSPLIT,$0 -// test bits for not-finite - MOVL x_hi+4(FP), AX - ANDL $0x7ff00000, AX - CMPL AX, $0x7ff00000 - JEQ not_finite - FLDL2E // F0=log2(e) - FMULD x+0(FP), F0 // F0=x*log2(e) - FMOVD F0, F1 // F0=x*log2(e), F1=x*log2(e) - FRNDINT // F0=int(x*log2(e)), F1=x*log2(e) - FSUBD F0, F1 // F0=int(x*log2(e)), F1=x*log2(e)-int(x*log2(e)) - FXCHD F0, F1 // F0=x*log2(e)-int(x*log2(e)), F1=int(x*log2(e)) - F2XM1 // F0=2**(x*log2(e)-int(x*log2(e)))-1, F1=int(x*log2(e)) - FLD1 // F0=1, F1=2**(x*log2(e)-int(x*log2(e)))-1, F2=int(x*log2(e)) - FADDDP F0, F1 // F0=2**(x*log2(e)-int(x*log2(e))), F1=int(x*log2(e)) - FSCALE // F0=e**x, F1=int(x*log2(e)) - FMOVDP F0, F1 // F0=e**x - FMOVDP F0, ret+8(FP) - RET -not_finite: -// test bits for -Inf - MOVL x_hi+4(FP), BX - MOVL x_lo+0(FP), CX - CMPL BX, $0xfff00000 - JNE not_neginf - CMPL CX, $0 - JNE not_neginf - FLDZ // F0=0 - FMOVDP F0, ret+8(FP) - RET -not_neginf: - MOVL CX, ret_lo+8(FP) - MOVL BX, ret_hi+12(FP) - RET |