s_copysign.c File Reference

#include "math_libm.h"
#include "math_private.h"

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Functions
double	copysign (double x, double y)

Function Documentation

double copysign	(	double	x,
		double	y
	)

Definition at line 21 of file s_copysign.c.

References GET_HIGH_WORD, and SET_HIGH_WORD.

Referenced by scalbln(), and SDL_copysign().

{
        u_int32_t hx,hy;
        GET_HIGH_WORD(hx,x);
        GET_HIGH_WORD(hy,y);
        SET_HIGH_WORD(x,(hx&0x7fffffff)|(hy&0x80000000));
        return x;
}