Initial commit

1 files changed, 33 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/libm/s_isnanf.c b/contrib/SDL-3.2.8/src/libm/s_isnanf.c
new file mode 100644
index 0000000..1cb308c
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/libm/s_isnanf.c
@@ -0,0 +1,33 @@
+#include "SDL_internal.h"
+/* s_isnanf.c -- float version of s_isnan.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+ * isnanf(x) returns 1 is x is nan, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int __isnanf(float x)
+{
+        int32_t ix;
+        GET_FLOAT_WORD(ix,x);
+        ix &= 0x7fffffff;
+        ix = 0x7f800000 - ix;
+        return (int)(((u_int32_t)(ix))>>31);
+}
+libm_hidden_def(__isnanf)