fix double-processing of DT_RELR relocations in ldso relocating itself

[musl] / src / math / modf.c

diff --git a/src/math/modf.c b/src/math/modf.c
index de45069..1c8a1db 100644 (file)
--- a/src/math/modf.c
+++ b/src/math/modf.c
@@ -1,37 +1,34 @@
-#include <math.h>
-#include <stdint.h>
+#include "libm.h"
 
 double modf(double x, double *iptr)
 {
-       union {double x; uint64_t n;} u = {x};
+       union {double f; uint64_t i;} u = {x};
        uint64_t mask;
-       int e;
-
-       e = (int)(u.n>>52 & 0x7ff) - 0x3ff;
+       int e = (int)(u.i>>52 & 0x7ff) - 0x3ff;
 
        /* no fractional part */
        if (e >= 52) {
                *iptr = x;
-               if (e == 0x400 && u.n<<12 != 0) /* nan */
+               if (e == 0x400 && u.i<<12 != 0) /* nan */
                        return x;
-               u.n &= (uint64_t)1<<63;
-               return u.x;
+               u.i &= 1ULL<<63;
+               return u.f;
        }
 
        /* no integral part*/
        if (e < 0) {
-               u.n &= (uint64_t)1<<63;
-               *iptr = u.x;
+               u.i &= 1ULL<<63;
+               *iptr = u.f;
                return x;
        }
 
-       mask = (uint64_t)-1>>12 >> e;
-       if ((u.n & mask) == 0) {
+       mask = -1ULL>>12>>e;
+       if ((u.i & mask) == 0) {
                *iptr = x;
-               u.n &= (uint64_t)1<<63;
-               return u.x;
+               u.i &= 1ULL<<63;
+               return u.f;
        }
-       u.n &= ~mask;
-       *iptr = u.x;
-       return x - *iptr;
+       u.i &= ~mask;
+       *iptr = u.f;
+       return x - u.f;
 }