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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/mips/math-emu/dp_fsp.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/mips/math-emu/dp_fsp.c')
-rw-r--r--arch/mips/math-emu/dp_fsp.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dp_fsp.c b/arch/mips/math-emu/dp_fsp.c
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+++ b/arch/mips/math-emu/dp_fsp.c
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+/* IEEE754 floating point arithmetic
+ * double precision: common utilities
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ *
+ * ########################################################################
+ *
+ * This program is free software; you can distribute it and/or modify it
+ * under the terms of the GNU General Public License (Version 2) as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * ########################################################################
+ */
+
+
+#include "ieee754dp.h"
+
+ieee754dp ieee754dp_fsp(ieee754sp x)
+{
+ COMPXSP;
+
+ EXPLODEXSP;
+
+ CLEARCX;
+
+ FLUSHXSP;
+
+ switch (xc) {
+ case IEEE754_CLASS_SNAN:
+ SETCX(IEEE754_INVALID_OPERATION);
+ return ieee754dp_nanxcpt(ieee754dp_indef(), "fsp");
+ case IEEE754_CLASS_QNAN:
+ return ieee754dp_nanxcpt(builddp(xs,
+ DP_EMAX + 1 + DP_EBIAS,
+ ((u64) xm
+ << (DP_MBITS -
+ SP_MBITS))), "fsp",
+ x);
+ case IEEE754_CLASS_INF:
+ return ieee754dp_inf(xs);
+ case IEEE754_CLASS_ZERO:
+ return ieee754dp_zero(xs);
+ case IEEE754_CLASS_DNORM:
+ /* normalize */
+ while ((xm >> SP_MBITS) == 0) {
+ xm <<= 1;
+ xe--;
+ }
+ break;
+ case IEEE754_CLASS_NORM:
+ break;
+ }
+
+ /* CAN'T possibly overflow,underflow, or need rounding
+ */
+
+ /* drop the hidden bit */
+ xm &= ~SP_HIDDEN_BIT;
+
+ return builddp(xs, xe + DP_EBIAS,
+ (u64) xm << (DP_MBITS - SP_MBITS));
+}