github.com/likebike/go--@v0.0.0-20190911215757-0bd925d16e96/go/src/math/mod_386.s (about)

     1  // Copyright 2010 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  // func Mod(x, y float64) float64
     8  TEXT ·Mod(SB),NOSPLIT,$0
     9  	FMOVD   y+8(FP), F0  // F0=y
    10  	FMOVD   x+0(FP), F0  // F0=x, F1=y
    11  	FPREM                // F0=reduced_x, F1=y
    12  	FSTSW   AX           // AX=status word
    13  	ANDW    $0x0400, AX
    14  	JNE     -3(PC)       // jump if reduction incomplete
    15  	FMOVDP  F0, F1       // F0=x-q*y
    16  	FMOVDP  F0, ret+16(FP)
    17  	RET