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c007ce824d
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
29 lines
981 B
ArmAsm
29 lines
981 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 Sincos(x float64) (sin, cos float64)
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TEXT ·Sincos(SB),NOSPLIT,$0
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FMOVD x+0(FP), F0 // F0=x
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FSINCOS // F0=cos(x), F1=sin(x) if -2**63 < x < 2**63
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FSTSW AX // AX=status word
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ANDW $0x0400, AX
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JNE 4(PC) // jump if x outside range
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FMOVDP F0, cos+16(FP) // F0=sin(x)
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FMOVDP F0, sin+8(FP)
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RET
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FLDPI // F0=Pi, F1=x
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FADDD F0, F0 // F0=2*Pi, F1=x
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FXCHD F0, F1 // F0=x, F1=2*Pi
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FPREM1 // F0=reduced_x, F1=2*Pi
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FSTSW AX // AX=status word
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ANDW $0x0400, AX
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JNE -3(PC) // jump if reduction incomplete
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FMOVDP F0, F1 // F0=reduced_x
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FSINCOS // F0=cos(reduced_x), F1=sin(reduced_x)
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FMOVDP F0, cos+16(FP) // F0=sin(reduced_x)
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FMOVDP F0, sin+8(FP)
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RET
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