[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libm/s_isinf.c b/ap/build/uClibc/libm/s_isinf.c
new file mode 100644
index 0000000..62e5263
--- /dev/null
+++ b/ap/build/uClibc/libm/s_isinf.c
@@ -0,0 +1,23 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Changed to return -1 for -Inf by Ulrich Drepper <drepper@cygnus.com>.
+ * Public domain.
+ */
+
+/*
+ * isinf(x) returns 1 is x is inf, -1 if x is -inf, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int __isinf(double x)
+{
+ int32_t hx,lx;
+ EXTRACT_WORDS(hx,lx,x);
+ lx |= (hx & 0x7fffffff) ^ 0x7ff00000;
+ lx |= -lx;
+ return ~(lx >> 31) & (hx >> 30);
+}
+libm_hidden_def(__isinf)