/* * linux/kernel/math/compare.c * * (C) 1991 Linus Torvalds *//* * temporary real comparison routines */#include <linux/math_emu.h>#define clear_Cx() (I387.swd &= ~0x4500)static void normalize(temp_real * a){	int i = a->exponent & 0x7fff;	int sign = a->exponent & 0x8000;	if (!(a->a || a->b)) {		a->exponent = 0;		return;	}	while (i && a->b >= 0) {		i--;		__asm__("addl %0,%0 ; adcl %1,%1"			:"=r" (a->a),"=r" (a->b)			:"0" (a->a),"1" (a->b));	}	a->exponent = i | sign;}void ftst(const temp_real * a){	temp_real b;	clear_Cx();	b = *a;	normalize(&b);	if (b.a || b.b || b.exponent) {		if (b.exponent < 0)			set_C0();	} else		set_C3();}void fcom(const temp_real * src1, const temp_real * src2){	temp_real a;	a = *src1;	a.exponent ^= 0x8000;	fadd(&a,src2,&a);	ftst(&a);}void fucom(const temp_real * src1, const temp_real * src2){	fcom(src1,src2);}