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authorUlrich Drepper <drepper@redhat.com>1999-12-29 18:11:48 +0000
committerUlrich Drepper <drepper@redhat.com>1999-12-29 18:11:48 +0000
commitd876f5327985eac3bf3109e9429febc8a8954ff5 (patch)
tree2ab0233054876a59507ff2ef9652ef81b1317991 /soft-fp/truncdfsf2.c
parentdbbbaf53352501384c57512e2251c9d7169388af (diff)
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Update.
1999-12-29  Ulrich Drepper  <drepper@cygnus.com>

	* soft-fp/*: Tons of new files to implement floating-point arithmetic
	in software.
	Contributed by  Richard Henderson, Jakub Jelinek and others.
Diffstat (limited to 'soft-fp/truncdfsf2.c')
-rw-r--r--soft-fp/truncdfsf2.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/soft-fp/truncdfsf2.c b/soft-fp/truncdfsf2.c
new file mode 100644
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+++ b/soft-fp/truncdfsf2.c
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+/* Software floating-point emulation.
+   Truncate IEEE double into IEEE single
+   Copyright (C) 1997,1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson (rth@cygnus.com) and
+		  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"
+#include "single.h"
+#include "double.h"
+
+float __truncdfsf2(double a)
+{
+  FP_DECL_EX;
+  FP_DECL_D(A);
+  FP_DECL_S(R);
+  float r;
+
+  FP_INIT_ROUNDMODE;
+  FP_UNPACK_D(A, a);
+#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
+  FP_CONV(S,D,1,2,R,A);
+#else
+  FP_CONV(S,D,1,1,R,A);
+#endif
+  FP_PACK_S(r, R);
+  FP_HANDLE_EXCEPTIONS;
+
+  return r;
+}