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+// 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 ·archMax(x, y float64) float64
+TEXT ·archMax(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 archMin(x, y float64) float64
+TEXT ·archMin(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