X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=math%2Fs_nexttowardf.c;h=cdc06109cae11b36b3d25082e91fc7b7bb32d0b7;hb=c21c7bc24ec58c516d1608695d9c5a86f2f2fc0c;hp=fb008d579c061e5da94962bf72d8efb5f9f36b4f;hpb=8db218828187d58575c509b6ed3da0cad9f73519;p=thirdparty%2Fglibc.git

diff --git a/math/s_nexttowardf.c b/math/s_nexttowardf.c
index fb008d579c0..cdc06109cae 100644
--- a/math/s_nexttowardf.c
+++ b/math/s_nexttowardf.c
@@ -20,14 +20,16 @@
  *   Special cases:
  */
 
+#include <errno.h>
 #include <math.h>
+#include <math-barriers.h>
 #include <math_private.h>
 #include <float.h>
 
 float __nexttowardf(float x, long double y)
 {
 	int32_t hx,hy,ix,iy;
-	u_int32_t ly;
+	uint32_t ly;
 
 	GET_FLOAT_WORD(hx,x);
 	EXTRACT_WORDS(hy,ly,y);
@@ -40,38 +42,33 @@ float __nexttowardf(float x, long double y)
 	if((long double) x==y) return y;	/* x=y, return y */
 	if(ix==0) {				/* x == 0 */
 	    float u;
-	    SET_FLOAT_WORD(x,(u_int32_t)(hy&0x80000000)|1);/* return +-minsub*/
+	    SET_FLOAT_WORD(x,(uint32_t)(hy&0x80000000)|1);/* return +-minsub*/
 	    u = math_opt_barrier (x);
 	    u = u * u;
 	    math_force_eval (u);		 /* raise underflow flag */
 	    return x;
 	}
 	if(hx>=0) {				/* x > 0 */
-	    if(hy<0||(ix>>23)>(iy>>20)-0x380
-	       || ((ix>>23)==(iy>>20)-0x380
-		   && (ix&0x7fffff)>(((hy<<3)|(ly>>29))&0x7fffff)))	/* x > y, x -= ulp */
+	    if(x > y)				/* x -= ulp */
 		hx -= 1;
 	    else				/* x < y, x += ulp */
 		hx += 1;
 	} else {				/* x < 0 */
-	    if(hy>=0||(ix>>23)>(iy>>20)-0x380
-	       || ((ix>>23)==(iy>>20)-0x380
-		   && (ix&0x7fffff)>(((hy<<3)|(ly>>29))&0x7fffff)))	/* x < y, x -= ulp */
+	    if(x < y)				/* x -= ulp */
 		hx -= 1;
 	    else				/* x > y, x += ulp */
 		hx += 1;
 	}
 	hy = hx&0x7f800000;
 	if(hy>=0x7f800000) {
-	  x = x+x;	/* overflow  */
-	  if (FLT_EVAL_METHOD != 0)
-	    /* Force conversion to float.  */
-	    asm ("" : "+m"(x));
-	  return x;
+	  float u = x+x;			/* overflow  */
+	  math_force_eval (u);
+	  __set_errno (ERANGE);
 	}
 	if(hy<0x00800000) {
 	    float u = x*x;			/* underflow */
 	    math_force_eval (u);		/* raise underflow flag */
+	    __set_errno (ERANGE);
 	}
 	SET_FLOAT_WORD(x,hx);
 	return x;