diff options
Diffstat (limited to 'src/math/sqrt_arm.s')
| -rw-r--r-- | src/math/sqrt_arm.s | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/math/sqrt_arm.s b/src/math/sqrt_arm.s new file mode 100644 index 0000000..ffc7d10 --- /dev/null +++ b/src/math/sqrt_arm.s @@ -0,0 +1,20 @@ +// Copyright 2011 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 Sqrt(x float64) float64 +TEXT ·Sqrt(SB),NOSPLIT,$0 + MOVB runtime·goarm(SB), R11 + CMP $5, R11 + BEQ arm5 + MOVD x+0(FP),F0 + SQRTD F0,F0 + MOVD F0,ret+8(FP) + RET +arm5: + // Tail call to Go implementation. + // Can't use JMP, as in softfloat mode SQRTD is rewritten + // to a CALL, which makes this function have a frame. + RET ·sqrt(SB) |