1 files changed, 12 insertions, 0 deletions
diff --git a/src/math/isfinite.c b/src/math/isfinite.c
new file mode 100644
index 00000000..5fbf3582
--- /dev/null
+++ b/src/math/isfinite.c
@@ -0,0 +1,12 @@
+#include <math.h>
+                                int __isfinitef(float x);
+                               int __isfinited(double x);
+                          int __isfinitel(long double x);
+
+#define isfinite(x)        ((sizeof (x) == sizeof (float)) ? __isfinitef(x) : \
+             (sizeof (x) == sizeof (double)) ? __isfinited(x) :  __isfinitel(x))
+
+/*
+STDC(199901)
+LINK(m)
+*/