From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/math/__fpclassifyf.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100644 src/math/__fpclassifyf.c

(limited to 'src/math/__fpclassifyf.c')

diff --git a/src/math/__fpclassifyf.c b/src/math/__fpclassifyf.c
new file mode 100644
index 0000000..fd00eb1
--- /dev/null
+++ b/src/math/__fpclassifyf.c
@@ -0,0 +1,11 @@
+#include <math.h>
+#include <stdint.h>
+
+int __fpclassifyf(float x)
+{
+	union {float f; uint32_t i;} u = {x};
+	int e = u.i>>23 & 0xff;
+	if (!e) return u.i<<1 ? FP_SUBNORMAL : FP_ZERO;
+	if (e==0xff) return u.i<<9 ? FP_NAN : FP_INFINITE;
+	return FP_NORMAL;
+}
-- 
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