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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
| commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
| tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /src/math/dim_riscv64.s | |
| parent | Initial commit. (diff) | |
| download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip | |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/math/dim_riscv64.s')
| -rw-r--r-- | src/math/dim_riscv64.s | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/src/math/dim_riscv64.s b/src/math/dim_riscv64.s new file mode 100644 index 0000000..5b2fd3d --- /dev/null +++ b/src/math/dim_riscv64.s @@ -0,0 +1,70 @@ +// Copyright 2020 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" + +// Values returned from an FCLASS instruction. +#define NegInf 0x001 +#define PosInf 0x080 +#define NaN 0x200 + +// func archMax(x, y float64) float64 +TEXT ·archMax(SB),NOSPLIT,$0 + MOVD x+0(FP), F0 + MOVD y+8(FP), F1 + FCLASSD F0, X5 + FCLASSD F1, X6 + + // +Inf special cases + MOV $PosInf, X7 + BEQ X7, X5, isMaxX + BEQ X7, X6, isMaxY + + // NaN special cases + MOV $NaN, X7 + BEQ X7, X5, isMaxX + BEQ X7, X6, isMaxY + + // normal case + FMAXD F0, F1, F0 + MOVD F0, ret+16(FP) + RET + +isMaxX: // return x + MOVD F0, ret+16(FP) + RET + +isMaxY: // return y + MOVD F1, ret+16(FP) + RET + +// func archMin(x, y float64) float64 +TEXT ·archMin(SB),NOSPLIT,$0 + MOVD x+0(FP), F0 + MOVD y+8(FP), F1 + FCLASSD F0, X5 + FCLASSD F1, X6 + + // -Inf special cases + MOV $NegInf, X7 + BEQ X7, X5, isMinX + BEQ X7, X6, isMinY + + // NaN special cases + MOV $NaN, X7 + BEQ X7, X5, isMinX + BEQ X7, X6, isMinY + + // normal case + FMIND F0, F1, F0 + MOVD F0, ret+16(FP) + RET + +isMinX: // return x + MOVD F0, ret+16(FP) + RET + +isMinY: // return y + MOVD F1, ret+16(FP) + RET |