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Diffstat (limited to 'soft-fp/sysdeps/sparc/sparc64/qp_util.c')
-rw-r--r--soft-fp/sysdeps/sparc/sparc64/qp_util.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/soft-fp/sysdeps/sparc/sparc64/qp_util.c b/soft-fp/sysdeps/sparc/sparc64/qp_util.c
new file mode 100644
index 0000000000..3009b2212a
--- /dev/null
+++ b/soft-fp/sysdeps/sparc/sparc64/qp_util.c
@@ -0,0 +1,57 @@
+/* Software floating-point emulation.
+ Helper routine for _Qp_* routines.
+ Simulate exceptions using double arithmetics.
+ Copyright (C) 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jakub Jelinek (jj@ultra.linux.cz).
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If
+ not, write to the Free Software Foundation, Inc.,
+ 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "soft-fp.h"
+
+static unsigned long numbers [] = {
+0x7fef000000000000UL, /* A huge double number */
+0x0010100000000000UL, /* Very tiny number */
+0x0010000000000000UL, /* Minimum normalized number */
+0x0000000000000000UL, /* Zero */
+};
+
+double __Qp_handle_exceptions(int exceptions)
+{
+ double d, *p = (double *)numbers;
+ if (exceptions & FP_EX_INVALID)
+ d = p[3]/p[3];
+ if (exceptions & FP_EX_OVERFLOW)
+ {
+ d = p[0] + p[0];
+ exceptions &= ~FP_EX_INEXACT;
+ }
+ if (exceptions & FP_EX_UNDERFLOW)
+ {
+ if (exceptions & FP_EX_INEXACT)
+ {
+ d = p[2] * p[2];
+ exceptions &= ~FP_EX_INEXACT;
+ }
+ else
+ d = p[1] - p[2];
+ }
+ if (exceptions & FP_EX_DIVZERO)
+ d = 1.0/p[3];
+ if (exceptions & FP_EX_INEXACT)
+ d = p[0] - p[2];
+ return d;
+}