dim_arm64.s

Documentation: math

     1// Copyright 2016 The Go Authors. All rights reserved.
     2// Use of this source code is governed by a BSD-style
     3// license that can be found in the LICENSE file.
     4
     5#include "textflag.h"
     6
     7#define PosInf 0x7FF0000000000000
     8#define NaN    0x7FF8000000000001
     9#define NegInf 0xFFF0000000000000
    10
    11// func ·archMax(x, y float64) float64
    12TEXT ·archMax(SB),NOSPLIT,$0
    13	// +Inf special cases
    14	MOVD	$PosInf, R0
    15	MOVD	x+0(FP), R1
    16	CMP	R0, R1
    17	BEQ	isPosInf
    18	MOVD	y+8(FP), R2
    19	CMP	R0, R2
    20	BEQ	isPosInf
    21	// normal case
    22	FMOVD	R1, F0
    23	FMOVD	R2, F1
    24	FMAXD	F0, F1, F0
    25	FMOVD	F0, ret+16(FP)
    26	RET
    27isPosInf: // return +Inf
    28	MOVD	R0, ret+16(FP)
    29	RET
    30
    31// func archMin(x, y float64) float64
    32TEXT ·archMin(SB),NOSPLIT,$0
    33	// -Inf special cases
    34	MOVD	$NegInf, R0
    35	MOVD	x+0(FP), R1
    36	CMP	R0, R1
    37	BEQ	isNegInf
    38	MOVD	y+8(FP), R2
    39	CMP	R0, R2
    40	BEQ	isNegInf
    41	// normal case
    42	FMOVD	R1, F0
    43	FMOVD	R2, F1
    44	FMIND	F0, F1, F0
    45	FMOVD	F0, ret+16(FP)
    46	RET
    47isNegInf: // return -Inf
    48	MOVD	R0, ret+16(FP)
    49	RET
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