docs/probe_math_exception.c:

[uclinux-h8/uClibc.git] / libm / s_finitef.c

diff --git a/libm/s_finitef.c b/libm/s_finitef.c
index 66eba8f..b427ea6 100644 (file)
--- a/libm/s_finitef.c
+++ b/libm/s_finitef.c
@@ -21,12 +21,13 @@
 #include "math.h"
 #include "math_private.h"
 
-libm_hidden_proto(__finitef)
 int __finitef(float x)
 {
-       int32_t ix;
-       GET_FLOAT_WORD(ix,x);
-       return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31);
+       u_int32_t ix;
+
+       GET_FLOAT_WORD(ix, x);
+       /* Finite numbers have at least one zero bit in exponent. */
+       /* All other numbers will result in 0xffffffff after OR: */
+       return (ix | 0x807fffff) != 0xffffffff;
 }
 libm_hidden_def(__finitef)
-strong_alias(__finitef,finitef)