Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 128 insertions, 0 deletions

diff --git a/arch/mips/math-emu/sp_tint.c b/arch/mips/math-emu/sp_tint.c
new file mode 100644
index 000000000000..1d73d2abe0b5
--- /dev/null
+++ b/arch/mips/math-emu/sp_tint.c
@@ -0,0 +1,128 @@
+/* IEEE754 floating point arithmetic
+ * single precision
+ */
+/*
+ * 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 <linux/kernel.h>
+#include "ieee754sp.h"
+
+int ieee754sp_tint(ieee754sp x)
+{
+        COMPXSP;
+
+        CLEARCX;
+
+        EXPLODEXSP;
+        FLUSHXSP;
+
+        switch (xc) {
+        case IEEE754_CLASS_SNAN:
+        case IEEE754_CLASS_QNAN:
+        case IEEE754_CLASS_INF:
+                SETCX(IEEE754_INVALID_OPERATION);
+                return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+        case IEEE754_CLASS_ZERO:
+                return 0;
+        case IEEE754_CLASS_DNORM:
+        case IEEE754_CLASS_NORM:
+                break;
+        }
+        if (xe >= 31) {
+                /* look for valid corner case */
+                if (xe == 31 && xs && xm == SP_HIDDEN_BIT)
+                        return -0x80000000;
+                /* Set invalid. We will only use overflow for floating
+                   point overflow */
+                SETCX(IEEE754_INVALID_OPERATION);
+                return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+        }
+        /* oh gawd */
+        if (xe > SP_MBITS) {
+                xm <<= xe - SP_MBITS;
+        } else {
+                u32 residue;
+                int round;
+                int sticky;
+                int odd;
+
+                if (xe < -1) {
+                        residue = xm;
+                        round = 0;
+                        sticky = residue != 0;
+                        xm = 0;
+                }
+                else {
+                        /* Shifting a u32 32 times does not work,
+                        * so we do it in two steps. Be aware that xe
+                        * may be -1 */
+                        residue = xm << (xe + 1);
+                        residue <<= 31 - SP_MBITS;
+                        round = (residue >> 31) != 0;
+                        sticky = (residue << 1) != 0;
+                        xm >>= SP_MBITS - xe;
+                }
+                odd = (xm & 0x1) != 0x0;
+                switch (ieee754_csr.rm) {
+                case IEEE754_RN:
+                        if (round && (sticky || odd))
+                                xm++;
+                        break;
+                case IEEE754_RZ:
+                        break;
+                case IEEE754_RU:        /* toward +Infinity */
+                        if ((round || sticky) && !xs)
+                                xm++;
+                        break;
+                case IEEE754_RD:        /* toward -Infinity */
+                        if ((round || sticky) && xs)
+                                xm++;
+                        break;
+                }
+                if ((xm >> 31) != 0) {
+                        /* This can happen after rounding */
+                        SETCX(IEEE754_INVALID_OPERATION);
+                        return ieee754si_xcpt(ieee754si_indef(), "sp_tint", x);
+                }
+                if (round || sticky)
+                        SETCX(IEEE754_INEXACT);
+        }
+        if (xs)
+                return -xm;
+        else
+                return xm;
+}
+
+
+unsigned int ieee754sp_tuns(ieee754sp x)
+{
+        ieee754sp hb = ieee754sp_1e31();
+
+        /* what if x < 0 ?? */
+        if (ieee754sp_lt(x, hb))
+                return (unsigned) ieee754sp_tint(x);
+
+        return (unsigned) ieee754sp_tint(ieee754sp_sub(x, hb)) |
+            ((unsigned) 1 << 31);
+}