summaryrefslogtreecommitdiff
path: root/sysdeps/ieee754/ldbl-128ibm/s_finitel.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_finitel.c')
-rw-r--r--sysdeps/ieee754/ldbl-128ibm/s_finitel.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_finitel.c b/sysdeps/ieee754/ldbl-128ibm/s_finitel.c
new file mode 100644
index 0000000000..49f2c92385
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_finitel.c
@@ -0,0 +1,45 @@
+/* s_finitel.c -- long double version of s_finite.c.
+ * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz.
+ */
+
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * finitel(x) returns 1 is x is finite, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+#include <math_ldbl_opt.h>
+
+int
+___finitel (long double x)
+{
+ int64_t hx;
+ GET_LDOUBLE_MSW64(hx,x);
+ return (int)((u_int64_t)((hx&0x7fffffffffffffffLL)
+ -0x7ff0000000000000LL)>>63);
+}
+hidden_ver (___finitel, __finitel)
+weak_alias (___finitel, ____finitel)
+#ifdef IS_IN_libm
+long_double_symbol (libm, ____finitel, finitel);
+long_double_symbol (libm, ___finitel, __finitel);
+#else
+long_double_symbol (libc, ____finitel, finitel);
+long_double_symbol (libc, ___finitel, __finitel);
+#endif