1 files changed, 124 insertions, 0 deletions
diff --git a/arch/mips/math-emu/dp_tint.c b/arch/mips/math-emu/dp_tint.c
new file mode 100644
index 000000000000..77b2b7ccf28a
--- /dev/null
+++ b/arch/mips/math-emu/dp_tint.c
@@ -0,0 +1,124 @@
+/* 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 <linux/kernel.h>
+#include "ieee754dp.h"
+int ieee754dp_tint(ieee754dp x)
+{
+        COMPXDP;
+        CLEARCX;
+        EXPLODEXDP;
+        FLUSHXDP;
+        switch (xc) {
+        case IEEE754_CLASS_SNAN:
+        case IEEE754_CLASS_QNAN:
+        case IEEE754_CLASS_INF:
+                SETCX(IEEE754_INVALID_OPERATION);
+                return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+        case IEEE754_CLASS_ZERO:
+                return 0;
+        case IEEE754_CLASS_DNORM:
+        case IEEE754_CLASS_NORM:
+                break;
+        }
+        if (xe > 31) {
+                /* Set invalid. We will only use overflow for floating
+                   point overflow */
+                SETCX(IEEE754_INVALID_OPERATION);
+                return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+        }
+        /* oh gawd */
+        if (xe > DP_MBITS) {
+                xm <<= xe - DP_MBITS;
+        } else if (xe < DP_MBITS) {
+                u64 residue;
+                int round;
+                int sticky;
+                int odd;
+                if (xe < -1) {
+                        residue = xm;
+                        round = 0;
+                        sticky = residue != 0;
+                        xm = 0;
+                }
+                else {
+                        residue = xm << (64 - DP_MBITS + xe);
+                        round = (residue >> 63) != 0;
+                        sticky = (residue << 1) != 0;
+                        xm >>= DP_MBITS - xe;
+                }
+                /* Note: At this point upper 32 bits of xm are guaranteed
+                   to be zero */
+                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;
+                }
+                /* look for valid corner case 0x80000000 */
+                if ((xm >> 31) != 0 && (xs == 0 || xm != 0x80000000)) {
+                        /* This can happen after rounding */
+                        SETCX(IEEE754_INVALID_OPERATION);
+                        return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
+                }
+                if (round || sticky)
+                        SETCX(IEEE754_INEXACT);
+        }
+        if (xs)
+                return -xm;
+        else
+                return xm;
+}
+unsigned int ieee754dp_tuns(ieee754dp x)
+{
+        ieee754dp hb = ieee754dp_1e31();
+        /* what if x < 0 ?? */
+        if (ieee754dp_lt(x, hb))
+                return (unsigned) ieee754dp_tint(x);
+        return (unsigned) ieee754dp_tint(ieee754dp_sub(x, hb)) |
+            ((unsigned) 1 << 31);
+}

diff --git a/arch/mips/math-emu/dp_tint.c b/arch/mips/math-emu/dp_tint.c new file mode 100644 index 000000000000..77b2b7ccf28a --- /dev/null +++ b/arch/mips/math-emu/dp_tint.c
@@ -0,0 +1,124 @@
	1	/* IEEE754 floating point arithmetic
	2	* double precision: common utilities
	3	*/
	4	/*
	5	* MIPS floating point support
	6	* Copyright (C) 1994-2000 Algorithmics Ltd.
	7	* http://www.algor.co.uk
	8	*
	9	* ########################################################################
	10	*
	11	* This program is free software; you can distribute it and/or modify it
	12	* under the terms of the GNU General Public License (Version 2) as
	13	* published by the Free Software Foundation.
	14	*
	15	* This program is distributed in the hope it will be useful, but WITHOUT
	16	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	17	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	18	* for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License along
	21	* with this program; if not, write to the Free Software Foundation, Inc.,
	22	* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
	23	*
	24	* ########################################################################
	25	*/
	26
	27
	28	#include <linux/kernel.h>
	29	#include "ieee754dp.h"
	30
	31	int ieee754dp_tint(ieee754dp x)
	32	{
	33	COMPXDP;
	34
	35	CLEARCX;
	36
	37	EXPLODEXDP;
	38	FLUSHXDP;
	39
	40	switch (xc) {
	41	case IEEE754_CLASS_SNAN:
	42	case IEEE754_CLASS_QNAN:
	43	case IEEE754_CLASS_INF:
	44	SETCX(IEEE754_INVALID_OPERATION);
	45	return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
	46	case IEEE754_CLASS_ZERO:
	47	return 0;
	48	case IEEE754_CLASS_DNORM:
	49	case IEEE754_CLASS_NORM:
	50	break;
	51	}
	52	if (xe > 31) {
	53	/* Set invalid. We will only use overflow for floating
	54	point overflow */
	55	SETCX(IEEE754_INVALID_OPERATION);
	56	return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
	57	}
	58	/* oh gawd */
	59	if (xe > DP_MBITS) {
	60	xm <<= xe - DP_MBITS;
	61	} else if (xe < DP_MBITS) {
	62	u64 residue;
	63	int round;
	64	int sticky;
	65	int odd;
	66
	67	if (xe < -1) {
	68	residue = xm;
	69	round = 0;
	70	sticky = residue != 0;
	71	xm = 0;
	72	}
	73	else {
	74	residue = xm << (64 - DP_MBITS + xe);
	75	round = (residue >> 63) != 0;
	76	sticky = (residue << 1) != 0;
	77	xm >>= DP_MBITS - xe;
	78	}
	79	/* Note: At this point upper 32 bits of xm are guaranteed
	80	to be zero */
	81	odd = (xm & 0x1) != 0x0;
	82	switch (ieee754_csr.rm) {
	83	case IEEE754_RN:
	84	if (round && (sticky \|\| odd))
	85	xm++;
	86	break;
	87	case IEEE754_RZ:
	88	break;
	89	case IEEE754_RU: /* toward +Infinity */
	90	if ((round \|\| sticky) && !xs)
	91	xm++;
	92	break;
	93	case IEEE754_RD: /* toward -Infinity */
	94	if ((round \|\| sticky) && xs)
	95	xm++;
	96	break;
	97	}
	98	/* look for valid corner case 0x80000000 */
	99	if ((xm >> 31) != 0 && (xs == 0 \|\| xm != 0x80000000)) {
	100	/* This can happen after rounding */
	101	SETCX(IEEE754_INVALID_OPERATION);
	102	return ieee754si_xcpt(ieee754si_indef(), "dp_tint", x);
	103	}
	104	if (round \|\| sticky)
	105	SETCX(IEEE754_INEXACT);
	106	}
	107	if (xs)
	108	return -xm;
	109	else
	110	return xm;
	111	}
	112
	113
	114	unsigned int ieee754dp_tuns(ieee754dp x)
	115	{
	116	ieee754dp hb = ieee754dp_1e31();
	117
	118	/* what if x < 0 ?? */
	119	if (ieee754dp_lt(x, hb))
	120	return (unsigned) ieee754dp_tint(x);
	121
	122	return (unsigned) ieee754dp_tint(ieee754dp_sub(x, hb)) \|
	123	((unsigned) 1 << 31);
	124	}