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dim_riscv64.s
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// 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