1 files changed, 54 insertions, 0 deletions

diff --git a/arch/mips/math-emu/dp_logb.c b/arch/mips/math-emu/dp_logb.c
new file mode 100644
index 000000000000..603388621ca5
--- /dev/null
+++ b/arch/mips/math-emu/dp_logb.c
@@ -0,0 +1,54 @@
+/* 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"
+
+ieee754dp ieee754dp_logb(ieee754dp x)
+{
+        COMPXDP;
+
+        CLEARCX;
+
+        EXPLODEXDP;
+
+        switch (xc) {
+        case IEEE754_CLASS_SNAN:
+                return ieee754dp_nanxcpt(x, "logb", x);
+        case IEEE754_CLASS_QNAN:
+                return x;
+        case IEEE754_CLASS_INF:
+                return ieee754dp_inf(0);
+        case IEEE754_CLASS_ZERO:
+                return ieee754dp_inf(1);
+        case IEEE754_CLASS_DNORM:
+                DPDNORMX;
+                break;
+        case IEEE754_CLASS_NORM:
+                break;
+        }
+        return ieee754dp_fint(xe);
+}