--- /dev/null
+/*
+ * IEEE754 floating point
+ * common internal header file
+ */
+/*
+ * 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef __IEEE754INT_H
+#define __IEEE754INT_H
+
+#include "ieee754.h"
+
+#define CLPAIR(x, y) ((x)*6+(y))
+
+static inline void ieee754_clearcx(void)
+{
+ ieee754_csr.cx = 0;
+}
+
+static inline void ieee754_setcx(const unsigned int flags)
+{
+ ieee754_csr.cx |= flags;
+ ieee754_csr.sx |= flags;
+}
+
+static inline int ieee754_setandtestcx(const unsigned int x)
+{
+ ieee754_setcx(x);
+
+ return ieee754_csr.mx & x;
+}
+
+static inline int ieee754_class_nan(int xc)
+{
+ return xc >= IEEE754_CLASS_SNAN;
+}
+
+#define COMPXSP \
+ unsigned xm; int xe; int xs __maybe_unused; int xc
+
+#define COMPYSP \
+ unsigned ym; int ye; int ys; int yc
+
+#define EXPLODESP(v, vc, vs, ve, vm) \
+{ \
+ vs = SPSIGN(v); \
+ ve = SPBEXP(v); \
+ vm = SPMANT(v); \
+ if (ve == SP_EMAX+1+SP_EBIAS) { \
+ if (vm == 0) \
+ vc = IEEE754_CLASS_INF; \
+ else if (vm & SP_MBIT(SP_FBITS-1)) \
+ vc = IEEE754_CLASS_SNAN; \
+ else \
+ vc = IEEE754_CLASS_QNAN; \
+ } else if (ve == SP_EMIN-1+SP_EBIAS) { \
+ if (vm) { \
+ ve = SP_EMIN; \
+ vc = IEEE754_CLASS_DNORM; \
+ } else \
+ vc = IEEE754_CLASS_ZERO; \
+ } else { \
+ ve -= SP_EBIAS; \
+ vm |= SP_HIDDEN_BIT; \
+ vc = IEEE754_CLASS_NORM; \
+ } \
+}
+#define EXPLODEXSP EXPLODESP(x, xc, xs, xe, xm)
+#define EXPLODEYSP EXPLODESP(y, yc, ys, ye, ym)
+
+
+#define COMPXDP \
+ u64 xm; int xe; int xs __maybe_unused; int xc
+
+#define COMPYDP \
+ u64 ym; int ye; int ys; int yc
+
+#define EXPLODEDP(v, vc, vs, ve, vm) \
+{ \
+ vm = DPMANT(v); \
+ vs = DPSIGN(v); \
+ ve = DPBEXP(v); \
+ if (ve == DP_EMAX+1+DP_EBIAS) { \
+ if (vm == 0) \
+ vc = IEEE754_CLASS_INF; \
+ else if (vm & DP_MBIT(DP_FBITS-1)) \
+ vc = IEEE754_CLASS_SNAN; \
+ else \
+ vc = IEEE754_CLASS_QNAN; \
+ } else if (ve == DP_EMIN-1+DP_EBIAS) { \
+ if (vm) { \
+ ve = DP_EMIN; \
+ vc = IEEE754_CLASS_DNORM; \
+ } else \
+ vc = IEEE754_CLASS_ZERO; \
+ } else { \
+ ve -= DP_EBIAS; \
+ vm |= DP_HIDDEN_BIT; \
+ vc = IEEE754_CLASS_NORM; \
+ } \
+}
+#define EXPLODEXDP EXPLODEDP(x, xc, xs, xe, xm)
+#define EXPLODEYDP EXPLODEDP(y, yc, ys, ye, ym)
+
+#define FLUSHDP(v, vc, vs, ve, vm) \
+ if (vc==IEEE754_CLASS_DNORM) { \
+ if (ieee754_csr.nod) { \
+ ieee754_setcx(IEEE754_INEXACT); \
+ vc = IEEE754_CLASS_ZERO; \
+ ve = DP_EMIN-1+DP_EBIAS; \
+ vm = 0; \
+ v = ieee754dp_zero(vs); \
+ } \
+ }
+
+#define FLUSHSP(v, vc, vs, ve, vm) \
+ if (vc==IEEE754_CLASS_DNORM) { \
+ if (ieee754_csr.nod) { \
+ ieee754_setcx(IEEE754_INEXACT); \
+ vc = IEEE754_CLASS_ZERO; \
+ ve = SP_EMIN-1+SP_EBIAS; \
+ vm = 0; \
+ v = ieee754sp_zero(vs); \
+ } \
+ }
+
+#define FLUSHXDP FLUSHDP(x, xc, xs, xe, xm)
+#define FLUSHYDP FLUSHDP(y, yc, ys, ye, ym)
+#define FLUSHXSP FLUSHSP(x, xc, xs, xe, xm)
+#define FLUSHYSP FLUSHSP(y, yc, ys, ye, ym)
+
+#endif /* __IEEE754INT_H */
Code Review / kvmfornfv.git / blobdiff