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Diffstat (limited to 'src/math/dim_arm64.s')
| -rw-r--r-- | src/math/dim_arm64.s | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/math/dim_arm64.s b/src/math/dim_arm64.s new file mode 100644 index 0000000..2cb866f --- /dev/null +++ b/src/math/dim_arm64.s @@ -0,0 +1,49 @@ +// Copyright 2016 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" + +#define PosInf 0x7FF0000000000000 +#define NaN 0x7FF8000000000001 +#define NegInf 0xFFF0000000000000 + +// func ·Max(x, y float64) float64 +TEXT ·Max(SB),NOSPLIT,$0 + // +Inf special cases + MOVD $PosInf, R0 + MOVD x+0(FP), R1 + CMP R0, R1 + BEQ isPosInf + MOVD y+8(FP), R2 + CMP R0, R2 + BEQ isPosInf + // normal case + FMOVD R1, F0 + FMOVD R2, F1 + FMAXD F0, F1, F0 + FMOVD F0, ret+16(FP) + RET +isPosInf: // return +Inf + MOVD R0, ret+16(FP) + RET + +// func Min(x, y float64) float64 +TEXT ·Min(SB),NOSPLIT,$0 + // -Inf special cases + MOVD $NegInf, R0 + MOVD x+0(FP), R1 + CMP R0, R1 + BEQ isNegInf + MOVD y+8(FP), R2 + CMP R0, R2 + BEQ isNegInf + // normal case + FMOVD R1, F0 + FMOVD R2, F1 + FMIND F0, F1, F0 + FMOVD F0, ret+16(FP) + RET +isNegInf: // return -Inf + MOVD R0, ret+16(FP) + RET |