cvs commit: src/lib/msun/src s_nextafter.c s_nextafterf.c

[Ceri Davies]

On Sun, Jan 23, 2005 at 03:46:22PM +0000, David Schultz wrote:
> das         2005-01-23 15:46:22 UTC
> 
>   FreeBSD src repository
> 
>   Modified files:
>     lib/msun/src         s_nextafter.c s_nextafterf.c 
>   Log:
>   If x == y, return y, not x.  C99 (though not IEEE 754) requires that
>   nextafter(+0.0, -0.0) returns -0.0 and nextafter(-0.0, +0.0) returns +0.0.

These comments should be updated too.

> | @@ -38,7 +38,7 @@ nextafter(double x, double y)
> |  	if(((ix>=0x7ff00000)&&((ix-0x7ff00000)|lx)!=0) ||   /* x is nan */
> |  	   ((iy>=0x7ff00000)&&((iy-0x7ff00000)|ly)!=0))     /* y is nan */
> |  	   return x+y;
> | -	if(x==y) return x;		/* x=y, return x */
> | +	if(x==y) return y;		/* x=y, return x */
> |  	if((ix|lx)==0) {			/* x == 0 */
> |  	    INSERT_WORDS(x,hy&0x80000000,1);	/* return +-minsubnormal */
> |  	    y = x*x;

> | @@ -33,7 +33,7 @@ nextafterf(float x, float y)
> |  	if((ix>0x7f800000) ||   /* x is nan */
> |  	   (iy>0x7f800000))     /* y is nan */
> |  	   return x+y;
> | -	if(x==y) return x;		/* x=y, return x */
> | +	if(x==y) return y;		/* x=y, return x */
> |  	if(ix==0) {				/* x == 0 */
> |  	    SET_FLOAT_WORD(x,(hy&0x80000000)|1);/* return +-minsubnormal */
> |  	    y = x*x;

Ceri
-- 
Only two things are infinite, the universe and human stupidity, and I'm
not sure about the former.			  -- Einstein (attrib.)
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