1 files changed, 40 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c b/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c
new file mode 100644
index 0000000000..730aa4d8d1
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c
@@ -0,0 +1,40 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Change for long double by Jakub Jelinek <jj@ultra.linux.cz>
+ * Public domain.
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0;
+ * no branching!
+ * slightly dodgy in relying on signed shift right copying sign bit
+ */
+
+#include <math.h>
+#include <math_private.h>
+#include <math_ldbl_opt.h>
+
+int
+___isinfl (long double x)
+{
+  double xhi;
+  int64_t hx, mask;
+
+  xhi = ldbl_high (x);
+  EXTRACT_WORDS64 (hx, xhi);
+
+  mask = (hx & 0x7fffffffffffffffLL) ^ 0x7ff0000000000000LL;
+  mask |= -mask;
+  mask >>= 63;
+  return ~mask & (hx >> 62);
+}
+hidden_ver (___isinfl, __isinfl)
+#if !IS_IN (libm)
+weak_alias (___isinfl, ____isinfl)
+long_double_symbol (libc, ___isinfl, isinfl);
+long_double_symbol (libc, ____isinfl, __isinfl);
+#endif