fix integer overflow in WIFSTOPPED macro

[musl] / src / math / rintf.c

diff --git a/src/math/rintf.c b/src/math/rintf.c
index 9cfc2a2..9047688 100644 (file)
--- a/src/math/rintf.c
+++ b/src/math/rintf.c
@@ -1,6 +1,16 @@
+#include <float.h>
 #include <math.h>
 #include <stdint.h>
 
+#if FLT_EVAL_METHOD==0
+#define EPS FLT_EPSILON
+#elif FLT_EVAL_METHOD==1
+#define EPS DBL_EPSILON
+#elif FLT_EVAL_METHOD==2
+#define EPS LDBL_EPSILON
+#endif
+static const float_t toint = 1/EPS;
+
 float rintf(float x)
 {
        union {float f; uint32_t i;} u = {x};
@@ -11,9 +21,9 @@ float rintf(float x)
        if (e >= 0x7f+23)
                return x;
        if (s)
-               y = (float)(x - 0x1p23f) + 0x1p23f;
+               y = x - toint + toint;
        else
-               y = (float)(x + 0x1p23f) - 0x1p23f;
+               y = x + toint - toint;
        if (y == 0)
                return s ? -0.0f : 0.0f;
        return y;