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aab849e429
The 387 implementation is less accurate and slower. name old time/op new time/op delta Exp-8 29.7ns ± 2% 24.0ns ± 2% -19.08% (p=0.000 n=10+10) This makes Gamma more accurate too. Change-Id: Iad33b9cce0b087ccbce3e08ba7a6d285c4999d02 Reviewed-on: https://go-review.googlesource.com/30230 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Quentin Smith <quentin@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
12 lines
377 B
ArmAsm
12 lines
377 B
ArmAsm
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "textflag.h"
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// func Exp(x float64) float64
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TEXT ·Exp(SB),NOSPLIT,$0
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// Used to use 387 assembly (FLDL2E+F2XM1) here,
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// but it was both slower and less accurate than the portable Go code.
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JMP ·exp(SB)
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