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Diffstat (limited to 'arch/mips/math-emu/dp_frexp.c')
-rw-r--r--arch/mips/math-emu/dp_frexp.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dp_frexp.c b/arch/mips/math-emu/dp_frexp.c
new file mode 100644
index 00000000000..e650cb10c94
--- /dev/null
+++ b/arch/mips/math-emu/dp_frexp.c
@@ -0,0 +1,53 @@
+/* IEEE754 floating point arithmetic
+ * double precision: common utilities
+ */
+/*
+ * MIPS floating point support
+ * Copyright (C) 1994-2000 Algorithmics Ltd.
+ * http://www.algor.co.uk
+ *
+ * ########################################################################
+ *
+ * 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"
+
+/* close to ieeep754dp_logb
+*/
+ieee754dp ieee754dp_frexp(ieee754dp x, int *eptr)
+{
+ COMPXDP;
+ CLEARCX;
+ EXPLODEXDP;
+
+ switch (xc) {
+ case IEEE754_CLASS_SNAN:
+ case IEEE754_CLASS_QNAN:
+ case IEEE754_CLASS_INF:
+ case IEEE754_CLASS_ZERO:
+ *eptr = 0;
+ return x;
+ case IEEE754_CLASS_DNORM:
+ DPDNORMX;
+ break;
+ case IEEE754_CLASS_NORM:
+ break;
+ }
+ *eptr = xe + 1;
+ return builddp(xs, -1 + DP_EBIAS, xm & ~DP_HIDDEN_BIT);
+}