overhaul __synccall and fix AS-safety and other issues in set*id

[musl] / src / math / scalbnf.c

diff --git a/src/math/scalbnf.c b/src/math/scalbnf.c
index f94b5d5..0b62c3c 100644 (file)
--- 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;
+               y *= 0x1p-126f;
                n += 126;
                if (n < -126) {
-                       x *= 0x1p-126f;
+                       y *= 0x1p-126f;
                        n += 126;
-                       if (n < -126) {
-                               STRICT_ASSIGN(float, x, x * 0x1p-126f);
-                               return x;
-                       }
+                       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;
 }