blob: 2cb866ff3e987ff6b0e7538560ea237f1647bbea [file] [log] [blame]
// 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