[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/math/w_lgamma.c b/ap/libc/glibc/glibc-2.22/math/w_lgamma.c
new file mode 100644
index 0000000..a82b5e3
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/math/w_lgamma.c
@@ -0,0 +1,49 @@
+/* @(#)w_lgamma.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+/* double lgamma(double x)
+ * Return the logarithm of the Gamma function of x.
+ *
+ * Method: call __ieee754_lgamma_r
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+double
+__lgamma(double x)
+{
+ int local_signgam = 0;
+ double y = __ieee754_lgamma_r(x,
+ _LIB_VERSION != _ISOC_
+ /* ISO C99 does not define the
+ global variable. */
+ ? &signgam
+ : &local_signgam);
+ if(__builtin_expect(!isfinite(y), 0)
+ && isfinite(x) && _LIB_VERSION != _IEEE_)
+ return __kernel_standard(x, x,
+ __floor(x)==x&&x<=0.0
+ ? 15 /* lgamma pole */
+ : 14); /* lgamma overflow */
+
+ return y;
+}
+weak_alias (__lgamma, lgamma)
+strong_alias (__lgamma, __gamma)
+weak_alias (__gamma, gamma)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__lgamma, __lgammal)
+weak_alias (__lgamma, lgammal)
+strong_alias (__gamma, __gammal)
+weak_alias (__gamma, gammal)
+#endif