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-rw-r--r--src/math/__fpclassifyf.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/math/__fpclassifyf.c b/src/math/__fpclassifyf.c
new file mode 100644
index 00000000..bf59d0d4
--- /dev/null
+++ b/src/math/__fpclassifyf.c
@@ -0,0 +1,14 @@
+#include <stdint.h>
+#include <math.h>
+
+int __fpclassifyf(float __x)
+{
+ union {
+ float __f;
+ __uint32_t __i;
+ } __y = { __x };
+ int __ee = __y.__i>>23 & 0xff;
+ if (!__ee) return __y.__i<<1 ? FP_SUBNORMAL : FP_ZERO;
+ if (__ee==0xff) return __y.__i<<9 ? FP_NAN : FP_INFINITE;
+ return FP_NORMAL;
+}