1 files changed, 24 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/libm/s_isinff.c b/contrib/SDL-3.2.8/src/libm/s_isinff.c
new file mode 100644
index 0000000..184c9aa
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/libm/s_isinff.c
@@ -0,0 +1,24 @@
+#include "SDL_internal.h"
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ */
+
+/*
+ * isinff(x) returns 1 if x is inf, -1 if x is -inf, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int __isinff (float x)
+{
+        int32_t ix,t;
+        GET_FLOAT_WORD(ix,x);
+        t = ix & 0x7fffffff;
+        t ^= 0x7f800000;
+        t |= -t;
+        return ~(t >> 31) & (ix >> 30);
+}
+libm_hidden_def(__isinff)