X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmath%2Fscalbnf.c;h=a5ad208b69929f24336fae40e6af37101c99a72f;hb=a75283d777ed1827ed247dbb465818a0ce371c8f;hp=f94b5d5992bb0ad8ed67e19323e68853201df045;hpb=c4359e01303da2755fe7e8033826b132eb3659b1;p=musl

diff --git a/src/math/scalbnf.c b/src/math/scalbnf.c
index f94b5d59..a5ad208b 100644
--- a/src/math/scalbnf.c
+++ b/src/math/scalbnf.c
@@ -1,33 +1,31 @@
-#include "libm.h"
+#include <math.h>
+#include <stdint.h>
 
 float scalbnf(float x, int n)
 {
-	float scale;
+	union {float f; uint32_t i;} u;
+	float_t y = x;
 
 	if (n > 127) {
-		x *= 0x1p127f;
+		y *= 0x1p127f;
 		n -= 127;
 		if (n > 127) {
-			x *= 0x1p127f;
+			y *= 0x1p127f;
 			n -= 127;
-			if (n > 127) {
-				STRICT_ASSIGN(float, x, x * 0x1p127f);
-				return x;
-			}
+			if (n > 127)
+				n = 127;
 		}
 	} else if (n < -126) {
-		x *= 0x1p-126f;
-		n += 126;
+		y *= 0x1p-126f * 0x1p24f;
+		n += 126 - 24;
 		if (n < -126) {
-			x *= 0x1p-126f;
-			n += 126;
-			if (n < -126) {
-				STRICT_ASSIGN(float, x, x * 0x1p-126f);
-				return x;
-			}
+			y *= 0x1p-126f * 0x1p24f;
+			n += 126 - 24;
+			if (n < -126)
+				n = -126;
 		}
 	}
-	SET_FLOAT_WORD(scale, (uint32_t)(0x7f+n)<<23);
-	STRICT_ASSIGN(float, x, x * scale);
+	u.i = (uint32_t)(0x7f+n)<<23;
+	x = y * u.f;
 	return x;
 }