1 files changed, 16 insertions, 0 deletions
diff --git a/src/math/__fpclassifyl.c b/src/math/__fpclassifyl.c
new file mode 100644
index 00000000..4f93bef1
--- /dev/null
+++ b/src/math/__fpclassifyl.c
@@ -0,0 +1,16 @@
+#include <stdint.h>
+#include <math.h>
+
+/* FIXME: move this to arch-specific file */
+int __fpclassifyl(long double __x)
+{
+	union {
+		long double __ld;
+		__uint16_t __hw[5];
+		__uint64_t __m;
+	} __y = { __x };
+	int __ee = __y.__hw[4]&0x7fff;
+	if (!__ee) return __y.__m ? FP_SUBNORMAL : FP_ZERO;
+	if (__ee==0x7fff) return __y.__m ? FP_NAN : FP_INFINITE;
+	return FP_NORMAL;
+}