mq_notify: block all (application) signals in the worker thread

[musl] / src / math / exp10.c

diff --git a/src/math/exp10.c b/src/math/exp10.c
index 16d704a..26899eb 100644 (file)
--- a/src/math/exp10.c
+++ b/src/math/exp10.c
@@ -1,6 +1,6 @@
 #define _GNU_SOURCE
 #include <math.h>
-#include "libc.h"
+#include <stdint.h>
 
 double exp10(double x)
 {
@@ -11,7 +11,9 @@ double exp10(double x)
                1e10, 1e11, 1e12, 1e13, 1e14, 1e15
        };
        double n, y = modf(x, &n);
-       if (fabs(n) < 16) {
+       union {double f; uint64_t i;} u = {n};
+       /* fabs(n) < 16 without raising invalid on nan */
+       if ((u.i>>52 & 0x7ff) < 0x3ff+4) {
                if (!y) return p10[(int)n+15];
                y = exp2(3.32192809488736234787031942948939 * y);
                return y * p10[(int)n+15];