X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Fnextafterf.c;h=75a09f7d1cf115d9a5d5dfeda9b12d42de269904;hb=a2a328bd896fa909542b492601e3689119b95de0;hp=4727f7b0385141f1d6221e763cbb48b496f5220e;hpb=6cf865dba69bab6346dc268d9173609af36b984e;p=musl

diff --git a/src/math/nextafterf.c b/src/math/nextafterf.c
index 4727f7b0..75a09f7d 100644
--- a/src/math/nextafterf.c
+++ b/src/math/nextafterf.c
@@ -1,35 +1,30 @@
 #include "libm.h"
 
-#define SIGN 0x80000000
-
 float nextafterf(float x, float y)
 {
-	union fshape ux, uy;
+	union {float f; uint32_t i;} ux={x}, uy={y};
 	uint32_t ax, ay, e;
 
 	if (isnan(x) || isnan(y))
 		return x + y;
-	ux.value = x;
-	uy.value = y;
-	if (ux.bits == uy.bits)
+	if (ux.i == uy.i)
 		return y;
-	ax = ux.bits & ~SIGN;
-	ay = uy.bits & ~SIGN;
+	ax = ux.i & 0x7fffffff;
+	ay = uy.i & 0x7fffffff;
 	if (ax == 0) {
 		if (ay == 0)
 			return y;
-		ux.bits = (uy.bits & SIGN) | 1;
-	} else if (ax > ay || ((ux.bits ^ uy.bits) & SIGN))
-		ux.bits--;
+		ux.i = (uy.i & 0x80000000) | 1;
+	} else if (ax > ay || ((ux.i ^ uy.i) & 0x80000000))
+		ux.i--;
 	else
-		ux.bits++;
-	e = ux.bits & 0x7f800000;
-	/* raise overflow if ux.value is infinite and x is finite */
+		ux.i++;
+	e = ux.i & 0x7f800000;
+	/* raise overflow if ux.f is infinite and x is finite */
 	if (e == 0x7f800000)
-		return x + x;
-	/* raise underflow if ux.value is subnormal or zero */
-	if (e == 0) {
-		volatile float z = x*x + ux.value*ux.value;
-	}
-	return ux.value;
+		FORCE_EVAL(x+x);
+	/* raise underflow if ux.f is subnormal or zero */
+	if (e == 0)
+		FORCE_EVAL(x*x + ux.f*ux.f);
+	return ux.f;
 }