2.5-18.1

1 files changed, 95 insertions, 0 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm/s_fpclassifyl.c b/sysdeps/ieee754/ldbl-128ibm/s_fpclassifyl.c
new file mode 100644
index 0000000000..6999abc250
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_fpclassifyl.c
@@ -0,0 +1,95 @@
+/* Return classification value corresponding to argument.
+   Copyright (C) 1997,1999,2002,2004,2006,2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and
+   		  Jakub Jelinek <jj@ultra.linux.cz>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <math.h>
+
+#include "math_private.h"
+#include <math_ldbl_opt.h>
+
+  /*
+   *		hx                  lx
+   * +NaN	7ffn nnnn nnnn nnnn xxxx xxxx xxxx xxxx
+   * -NaN	fffn nnnn nnnn nnnn xxxx xxxx xxxx xxxx
+   * +Inf	7ff0 0000 0000 0000 xxxx xxxx xxxx xxxx
+   * -Inf	fff0 0000 0000 0000 xxxx xxxx xxxx xxxx
+   * +0		0000 0000 0000 0000 xxxx xxxx xxxx xxxx
+   * -0		8000 0000 0000 0000 xxxx xxxx xxxx xxxx
+   * +normal	0360 0000 0000 0000 0000 0000 0000 0000 (smallest)
+   * -normal	8360 0000 0000 0000 0000 0000 0000 0000 (smallest)
+   * +normal	7fef ffff ffff ffff 7c8f ffff ffff fffe (largest)
+   * +normal	ffef ffff ffff ffff fc8f ffff ffff fffe (largest)
+   * +denorm	0360 0000 0000 0000 8000 0000 0000 0001 (largest)
+   * -denorm	8360 0000 0000 0000 0000 0000 0000 0001 (largest)
+   * +denorm	000n nnnn nnnn nnnn xxxx xxxx xxxx xxxx
+   * -denorm	800n nnnn nnnn nnnn xxxx xxxx xxxx xxxx
+   */
+
+int
+___fpclassifyl (long double x)
+{
+  u_int64_t hx, lx;
+  int retval = FP_NORMAL;
+
+  GET_LDOUBLE_WORDS64 (hx, lx, x);
+  if ((hx & 0x7ff0000000000000ULL) == 0x7ff0000000000000ULL) {
+      /* +/-NaN or +/-Inf */
+      if (hx & 0x000fffffffffffffULL) {
+	  /* +/-NaN */
+	  retval = FP_NAN;
+      } else {
+	  retval = FP_INFINITE;
+      }
+  } else {
+      /* +/-zero or +/- normal or +/- denormal */
+      if (hx & 0x7fffffffffffffffULL) {
+	  /* +/- normal or +/- denormal */
+	  if ((hx & 0x7ff0000000000000ULL) > 0x0360000000000000ULL) {
+	      /* +/- normal */
+	      retval = FP_NORMAL;
+	  } else {
+	      if ((hx & 0x7ff0000000000000ULL) == 0x0360000000000000ULL) {
+		  if ((lx & 0x7fffffffffffffff)	/* lower is non-zero */
+		  && ((lx^hx) & 0x8000000000000000ULL)) { /* and sign differs */
+		      /* +/- denormal */
+		      retval = FP_SUBNORMAL;
+		  } else {
+		      /* +/- normal */
+		      retval = FP_NORMAL;
+		  }
+	      } else {
+		  /* +/- denormal */
+		  retval = FP_SUBNORMAL;
+	      }
+	  }
+      } else {
+	  /* +/- zero */
+	  retval = FP_ZERO;
+      }
+  }
+
+  return retval;
+}
+long_double_symbol (libm, ___fpclassifyl, __fpclassifyl);
+#ifdef __LONG_DOUBLE_MATH_OPTIONAL
+libm_hidden_ver (___fpclassifyl, __fpclassifyl)
+#else
+libm_hidden_def (__fpclassifyl)
+#endif