/* Software floating-point emulation.
Basic two-word fraction declaration and manipulation.
- Copyright (C) 1997-2014 Free Software Foundation, Inc.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson (rth@cygnus.com),
Jakub Jelinek (jj@ultra.linux.cz),
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
+ <https://www.gnu.org/licenses/>. */
-#define _FP_FRAC_DECL_2(X) _FP_W_TYPE X##_f0, X##_f1
+#ifndef SOFT_FP_OP_2_H
+#define SOFT_FP_OP_2_H 1
+
+#define _FP_FRAC_DECL_2(X) \
+ _FP_W_TYPE X##_f0 _FP_ZERO_INIT, X##_f1 _FP_ZERO_INIT
#define _FP_FRAC_COPY_2(D, S) (D##_f0 = S##_f0, D##_f1 = S##_f1)
#define _FP_FRAC_SET_2(X, I) __FP_FRAC_SET_2 (X, I)
#define _FP_FRAC_HIGH_2(X) (X##_f1)
do \
{ \
if (X##_f1) \
- __FP_CLZ (R, X##_f1); \
+ __FP_CLZ ((R), X##_f1); \
else \
{ \
- __FP_CLZ (R, X##_f0); \
- R += _FP_W_TYPE_SIZE; \
+ __FP_CLZ ((R), X##_f0); \
+ (R) += _FP_W_TYPE_SIZE; \
} \
} \
while (0)
-/* Predicates */
+/* Predicates. */
#define _FP_FRAC_NEGP_2(X) ((_FP_WS_TYPE) X##_f1 < 0)
#define _FP_FRAC_ZEROP_2(X) ((X##_f1 | X##_f0) == 0)
#define _FP_FRAC_OVERP_2(fs, X) (_FP_FRAC_HIGH_##fs (X) & _FP_OVERFLOW_##fs)
#define _FP_MINFRAC_2 0, 1
#define _FP_MAXFRAC_2 (~(_FP_WS_TYPE) 0), (~(_FP_WS_TYPE) 0)
-/*
- * Internals
- */
+/* Internals. */
#define __FP_FRAC_SET_2(X, I1, I0) (X##_f0 = I0, X##_f1 = I1)
do \
{ \
if (xh) \
- __FP_CLZ (R, xh); \
+ __FP_CLZ ((R), xh); \
else \
{ \
- __FP_CLZ (R, xl); \
- R += _FP_W_TYPE_SIZE; \
+ __FP_CLZ ((R), xl); \
+ (R) += _FP_W_TYPE_SIZE; \
} \
} \
while (0)
(rh = xh - yh - ((rl = xl - yl) > xl))
# endif
# ifndef __FP_FRAC_DEC_2
-# define __FP_FRAC_DEC_2(xh, xl, yh, yl) \
- do \
- { \
- UWtype _t = xl; \
- xh -= yh + ((xl -= yl) > _t); \
- } \
+# define __FP_FRAC_DEC_2(xh, xl, yh, yl) \
+ do \
+ { \
+ UWtype __FP_FRAC_DEC_2_t = xl; \
+ xh -= yh + ((xl -= yl) > __FP_FRAC_DEC_2_t); \
+ } \
while (0)
# endif
#endif
-/*
- * Unpack the raw bits of a native fp value. Do not classify or
- * normalize the data.
- */
+/* Unpack the raw bits of a native fp value. Do not classify or
+ normalize the data. */
-#define _FP_UNPACK_RAW_2(fs, X, val) \
- do \
- { \
- union _FP_UNION_##fs _flo; \
- _flo.flt = (val); \
- \
- X##_f0 = _flo.bits.frac0; \
- X##_f1 = _flo.bits.frac1; \
- X##_e = _flo.bits.exp; \
- X##_s = _flo.bits.sign; \
- } \
+#define _FP_UNPACK_RAW_2(fs, X, val) \
+ do \
+ { \
+ union _FP_UNION_##fs _FP_UNPACK_RAW_2_flo; \
+ _FP_UNPACK_RAW_2_flo.flt = (val); \
+ \
+ X##_f0 = _FP_UNPACK_RAW_2_flo.bits.frac0; \
+ X##_f1 = _FP_UNPACK_RAW_2_flo.bits.frac1; \
+ X##_e = _FP_UNPACK_RAW_2_flo.bits.exp; \
+ X##_s = _FP_UNPACK_RAW_2_flo.bits.sign; \
+ } \
while (0)
-#define _FP_UNPACK_RAW_2_P(fs, X, val) \
- do \
- { \
- union _FP_UNION_##fs *_flo = (union _FP_UNION_##fs *) (val); \
- \
- X##_f0 = _flo->bits.frac0; \
- X##_f1 = _flo->bits.frac1; \
- X##_e = _flo->bits.exp; \
- X##_s = _flo->bits.sign; \
- } \
+#define _FP_UNPACK_RAW_2_P(fs, X, val) \
+ do \
+ { \
+ union _FP_UNION_##fs *_FP_UNPACK_RAW_2_P_flo \
+ = (union _FP_UNION_##fs *) (val); \
+ \
+ X##_f0 = _FP_UNPACK_RAW_2_P_flo->bits.frac0; \
+ X##_f1 = _FP_UNPACK_RAW_2_P_flo->bits.frac1; \
+ X##_e = _FP_UNPACK_RAW_2_P_flo->bits.exp; \
+ X##_s = _FP_UNPACK_RAW_2_P_flo->bits.sign; \
+ } \
while (0)
-/*
- * Repack the raw bits of a native fp value.
- */
+/* Repack the raw bits of a native fp value. */
#define _FP_PACK_RAW_2(fs, val, X) \
do \
{ \
- union _FP_UNION_##fs _flo; \
+ union _FP_UNION_##fs _FP_PACK_RAW_2_flo; \
\
- _flo.bits.frac0 = X##_f0; \
- _flo.bits.frac1 = X##_f1; \
- _flo.bits.exp = X##_e; \
- _flo.bits.sign = X##_s; \
+ _FP_PACK_RAW_2_flo.bits.frac0 = X##_f0; \
+ _FP_PACK_RAW_2_flo.bits.frac1 = X##_f1; \
+ _FP_PACK_RAW_2_flo.bits.exp = X##_e; \
+ _FP_PACK_RAW_2_flo.bits.sign = X##_s; \
\
- (val) = _flo.flt; \
+ (val) = _FP_PACK_RAW_2_flo.flt; \
} \
while (0)
-#define _FP_PACK_RAW_2_P(fs, val, X) \
- do \
- { \
- union _FP_UNION_##fs *_flo = (union _FP_UNION_##fs *) (val); \
- \
- _flo->bits.frac0 = X##_f0; \
- _flo->bits.frac1 = X##_f1; \
- _flo->bits.exp = X##_e; \
- _flo->bits.sign = X##_s; \
- } \
+#define _FP_PACK_RAW_2_P(fs, val, X) \
+ do \
+ { \
+ union _FP_UNION_##fs *_FP_PACK_RAW_2_P_flo \
+ = (union _FP_UNION_##fs *) (val); \
+ \
+ _FP_PACK_RAW_2_P_flo->bits.frac0 = X##_f0; \
+ _FP_PACK_RAW_2_P_flo->bits.frac1 = X##_f1; \
+ _FP_PACK_RAW_2_P_flo->bits.exp = X##_e; \
+ _FP_PACK_RAW_2_P_flo->bits.sign = X##_s; \
+ } \
while (0)
-/*
- * Multiplication algorithms:
- */
+/* Multiplication algorithms: */
/* Given a 1W * 1W => 2W primitive, do the extended multiplication. */
#define _FP_MUL_MEAT_DW_2_wide(wfracbits, R, X, Y, doit) \
do \
{ \
- _FP_FRAC_DECL_2 (_b); \
- _FP_FRAC_DECL_2 (_c); \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_DW_2_wide_b); \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_DW_2_wide_c); \
\
- doit (_FP_FRAC_WORD_4 (R, 1), _FP_FRAC_WORD_4 (R, 0), X##_f0, Y##_f0); \
- doit (_b_f1, _b_f0, X##_f0, Y##_f1); \
- doit (_c_f1, _c_f0, X##_f1, Y##_f0); \
- doit (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), X##_f1, Y##_f1); \
+ doit (_FP_FRAC_WORD_4 (R, 1), _FP_FRAC_WORD_4 (R, 0), \
+ X##_f0, Y##_f0); \
+ doit (_FP_MUL_MEAT_DW_2_wide_b_f1, _FP_MUL_MEAT_DW_2_wide_b_f0, \
+ X##_f0, Y##_f1); \
+ doit (_FP_MUL_MEAT_DW_2_wide_c_f1, _FP_MUL_MEAT_DW_2_wide_c_f0, \
+ X##_f1, Y##_f0); \
+ doit (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
+ X##_f1, Y##_f1); \
\
__FP_FRAC_ADD_3 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _FP_FRAC_WORD_4 (R, 1), 0, _b_f1, _b_f0, \
+ _FP_FRAC_WORD_4 (R, 1), 0, \
+ _FP_MUL_MEAT_DW_2_wide_b_f1, \
+ _FP_MUL_MEAT_DW_2_wide_b_f0, \
_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
_FP_FRAC_WORD_4 (R, 1)); \
__FP_FRAC_ADD_3 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _FP_FRAC_WORD_4 (R, 1), 0, _c_f1, _c_f0, \
+ _FP_FRAC_WORD_4 (R, 1), 0, \
+ _FP_MUL_MEAT_DW_2_wide_c_f1, \
+ _FP_MUL_MEAT_DW_2_wide_c_f0, \
_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
_FP_FRAC_WORD_4 (R, 1)); \
} \
#define _FP_MUL_MEAT_2_wide(wfracbits, R, X, Y, doit) \
do \
{ \
- _FP_FRAC_DECL_4 (_z); \
+ _FP_FRAC_DECL_4 (_FP_MUL_MEAT_2_wide_z); \
\
- _FP_MUL_MEAT_DW_2_wide (wfracbits, _z, X, Y, doit); \
+ _FP_MUL_MEAT_DW_2_wide ((wfracbits), _FP_MUL_MEAT_2_wide_z, \
+ X, Y, doit); \
\
/* Normalize since we know where the msb of the multiplicands \
were (bit B), we know that the msb of the of the product is \
at either 2B or 2B-1. */ \
- _FP_FRAC_SRS_4 (_z, wfracbits-1, 2*wfracbits); \
- R##_f0 = _FP_FRAC_WORD_4 (_z, 0); \
- R##_f1 = _FP_FRAC_WORD_4 (_z, 1); \
+ _FP_FRAC_SRS_4 (_FP_MUL_MEAT_2_wide_z, (wfracbits)-1, \
+ 2*(wfracbits)); \
+ R##_f0 = _FP_FRAC_WORD_4 (_FP_MUL_MEAT_2_wide_z, 0); \
+ R##_f1 = _FP_FRAC_WORD_4 (_FP_MUL_MEAT_2_wide_z, 1); \
} \
while (0)
#define _FP_MUL_MEAT_DW_2_wide_3mul(wfracbits, R, X, Y, doit) \
do \
{ \
- _FP_FRAC_DECL_2 (_b); \
- _FP_FRAC_DECL_2 (_c); \
- _FP_W_TYPE _d; \
- int _c1, _c2; \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_DW_2_wide_3mul_b); \
+ _FP_FRAC_DECL_2 (_FP_MUL_MEAT_DW_2_wide_3mul_c); \
+ _FP_W_TYPE _FP_MUL_MEAT_DW_2_wide_3mul_d; \
+ int _FP_MUL_MEAT_DW_2_wide_3mul_c1; \
+ int _FP_MUL_MEAT_DW_2_wide_3mul_c2; \
\
- _b_f0 = X##_f0 + X##_f1; \
- _c1 = _b_f0 < X##_f0; \
- _b_f1 = Y##_f0 + Y##_f1; \
- _c2 = _b_f1 < Y##_f0; \
- doit (_d, _FP_FRAC_WORD_4 (R, 0), X##_f0, Y##_f0); \
- doit (_FP_FRAC_WORD_4 (R, 2), _FP_FRAC_WORD_4 (R, 1), _b_f0, _b_f1); \
- doit (_c_f1, _c_f0, X##_f1, Y##_f1); \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f0 = X##_f0 + X##_f1; \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c1 \
+ = _FP_MUL_MEAT_DW_2_wide_3mul_b_f0 < X##_f0; \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f1 = Y##_f0 + Y##_f1; \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c2 \
+ = _FP_MUL_MEAT_DW_2_wide_3mul_b_f1 < Y##_f0; \
+ doit (_FP_MUL_MEAT_DW_2_wide_3mul_d, _FP_FRAC_WORD_4 (R, 0), \
+ X##_f0, Y##_f0); \
+ doit (_FP_FRAC_WORD_4 (R, 2), _FP_FRAC_WORD_4 (R, 1), \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f0, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f1); \
+ doit (_FP_MUL_MEAT_DW_2_wide_3mul_c_f1, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c_f0, X##_f1, Y##_f1); \
\
- _b_f0 &= -_c2; \
- _b_f1 &= -_c1; \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f0 \
+ &= -_FP_MUL_MEAT_DW_2_wide_3mul_c2; \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f1 \
+ &= -_FP_MUL_MEAT_DW_2_wide_3mul_c1; \
__FP_FRAC_ADD_3 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _FP_FRAC_WORD_4 (R, 1), (_c1 & _c2), 0, _d, \
+ _FP_FRAC_WORD_4 (R, 1), \
+ (_FP_MUL_MEAT_DW_2_wide_3mul_c1 \
+ & _FP_MUL_MEAT_DW_2_wide_3mul_c2), 0, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_d, \
0, _FP_FRAC_WORD_4 (R, 2), _FP_FRAC_WORD_4 (R, 1)); \
__FP_FRAC_ADDI_2 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _b_f0); \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f0); \
__FP_FRAC_ADDI_2 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _b_f1); \
+ _FP_MUL_MEAT_DW_2_wide_3mul_b_f1); \
__FP_FRAC_DEC_3 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
_FP_FRAC_WORD_4 (R, 1), \
- 0, _d, _FP_FRAC_WORD_4 (R, 0)); \
+ 0, _FP_MUL_MEAT_DW_2_wide_3mul_d, \
+ _FP_FRAC_WORD_4 (R, 0)); \
__FP_FRAC_DEC_3 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _FP_FRAC_WORD_4 (R, 1), 0, _c_f1, _c_f0); \
+ _FP_FRAC_WORD_4 (R, 1), 0, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c_f1, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c_f0); \
__FP_FRAC_ADD_2 (_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2), \
- _c_f1, _c_f0, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c_f1, \
+ _FP_MUL_MEAT_DW_2_wide_3mul_c_f0, \
_FP_FRAC_WORD_4 (R, 3), _FP_FRAC_WORD_4 (R, 2)); \
} \
while (0)
#define _FP_MUL_MEAT_2_wide_3mul(wfracbits, R, X, Y, doit) \
do \
{ \
- _FP_FRAC_DECL_4 (_z); \
+ _FP_FRAC_DECL_4 (_FP_MUL_MEAT_2_wide_3mul_z); \
\
- _FP_MUL_MEAT_DW_2_wide_3mul (wfracbits, _z, X, Y, doit); \
+ _FP_MUL_MEAT_DW_2_wide_3mul ((wfracbits), \
+ _FP_MUL_MEAT_2_wide_3mul_z, \
+ X, Y, doit); \
\
/* Normalize since we know where the msb of the multiplicands \
were (bit B), we know that the msb of the of the product is \
at either 2B or 2B-1. */ \
- _FP_FRAC_SRS_4 (_z, wfracbits-1, 2*wfracbits); \
- R##_f0 = _FP_FRAC_WORD_4 (_z, 0); \
- R##_f1 = _FP_FRAC_WORD_4 (_z, 1); \
+ _FP_FRAC_SRS_4 (_FP_MUL_MEAT_2_wide_3mul_z, \
+ (wfracbits)-1, 2*(wfracbits)); \
+ R##_f0 = _FP_FRAC_WORD_4 (_FP_MUL_MEAT_2_wide_3mul_z, 0); \
+ R##_f1 = _FP_FRAC_WORD_4 (_FP_MUL_MEAT_2_wide_3mul_z, 1); \
} \
while (0)
#define _FP_MUL_MEAT_DW_2_gmp(wfracbits, R, X, Y) \
do \
{ \
- _FP_W_TYPE _x[2], _y[2]; \
- _x[0] = X##_f0; \
- _x[1] = X##_f1; \
- _y[0] = Y##_f0; \
- _y[1] = Y##_f1; \
+ _FP_W_TYPE _FP_MUL_MEAT_DW_2_gmp_x[2]; \
+ _FP_W_TYPE _FP_MUL_MEAT_DW_2_gmp_y[2]; \
+ _FP_MUL_MEAT_DW_2_gmp_x[0] = X##_f0; \
+ _FP_MUL_MEAT_DW_2_gmp_x[1] = X##_f1; \
+ _FP_MUL_MEAT_DW_2_gmp_y[0] = Y##_f0; \
+ _FP_MUL_MEAT_DW_2_gmp_y[1] = Y##_f1; \
\
- mpn_mul_n (R##_f, _x, _y, 2); \
+ mpn_mul_n (R##_f, _FP_MUL_MEAT_DW_2_gmp_x, \
+ _FP_MUL_MEAT_DW_2_gmp_y, 2); \
} \
while (0)
#define _FP_MUL_MEAT_2_gmp(wfracbits, R, X, Y) \
do \
{ \
- _FP_FRAC_DECL_4 (_z); \
+ _FP_FRAC_DECL_4 (_FP_MUL_MEAT_2_gmp_z); \
\
- _FP_MUL_MEAT_DW_2_gmp (wfracbits, _z, X, Y); \
+ _FP_MUL_MEAT_DW_2_gmp ((wfracbits), _FP_MUL_MEAT_2_gmp_z, X, Y); \
\
/* Normalize since we know where the msb of the multiplicands \
were (bit B), we know that the msb of the of the product is \
at either 2B or 2B-1. */ \
- _FP_FRAC_SRS_4 (_z, wfracbits-1, 2*wfracbits); \
- R##_f0 = _z_f[0]; \
- R##_f1 = _z_f[1]; \
+ _FP_FRAC_SRS_4 (_FP_MUL_MEAT_2_gmp_z, (wfracbits)-1, \
+ 2*(wfracbits)); \
+ R##_f0 = _FP_MUL_MEAT_2_gmp_z_f[0]; \
+ R##_f1 = _FP_MUL_MEAT_2_gmp_z_f[1]; \
} \
while (0)
_p240, _q240, _r240, _s240; \
UDItype _t240, _u240, _v240, _w240, _x240, _y240 = 0; \
\
- if (wfracbits < 106 || wfracbits > 120) \
- abort (); \
+ _FP_STATIC_ASSERT ((wfracbits) >= 106 && (wfracbits) <= 120, \
+ "wfracbits out of range"); \
\
setfetz; \
\
} \
while (0)
-/*
- * Division algorithms:
- */
+/* Division algorithms: */
#define _FP_DIV_MEAT_2_udiv(fs, R, X, Y) \
do \
{ \
- _FP_W_TYPE _n_f2, _n_f1, _n_f0, _r_f1, _r_f0, _m_f1, _m_f0; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_n_f2; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_n_f1; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_n_f0; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_r_f1; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_r_f0; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_m_f1; \
+ _FP_W_TYPE _FP_DIV_MEAT_2_udiv_m_f0; \
if (_FP_FRAC_GE_2 (X, Y)) \
{ \
- _n_f2 = X##_f1 >> 1; \
- _n_f1 = X##_f1 << (_FP_W_TYPE_SIZE - 1) | X##_f0 >> 1; \
- _n_f0 = X##_f0 << (_FP_W_TYPE_SIZE - 1); \
+ _FP_DIV_MEAT_2_udiv_n_f2 = X##_f1 >> 1; \
+ _FP_DIV_MEAT_2_udiv_n_f1 \
+ = X##_f1 << (_FP_W_TYPE_SIZE - 1) | X##_f0 >> 1; \
+ _FP_DIV_MEAT_2_udiv_n_f0 \
+ = X##_f0 << (_FP_W_TYPE_SIZE - 1); \
} \
else \
{ \
R##_e--; \
- _n_f2 = X##_f1; \
- _n_f1 = X##_f0; \
- _n_f0 = 0; \
+ _FP_DIV_MEAT_2_udiv_n_f2 = X##_f1; \
+ _FP_DIV_MEAT_2_udiv_n_f1 = X##_f0; \
+ _FP_DIV_MEAT_2_udiv_n_f0 = 0; \
} \
\
/* Normalize, i.e. make the most significant bit of the \
- denominator set. */ \
+ denominator set. */ \
_FP_FRAC_SLL_2 (Y, _FP_WFRACXBITS_##fs); \
\
- udiv_qrnnd (R##_f1, _r_f1, _n_f2, _n_f1, Y##_f1); \
- umul_ppmm (_m_f1, _m_f0, R##_f1, Y##_f0); \
- _r_f0 = _n_f0; \
- if (_FP_FRAC_GT_2 (_m, _r)) \
+ udiv_qrnnd (R##_f1, _FP_DIV_MEAT_2_udiv_r_f1, \
+ _FP_DIV_MEAT_2_udiv_n_f2, _FP_DIV_MEAT_2_udiv_n_f1, \
+ Y##_f1); \
+ umul_ppmm (_FP_DIV_MEAT_2_udiv_m_f1, _FP_DIV_MEAT_2_udiv_m_f0, \
+ R##_f1, Y##_f0); \
+ _FP_DIV_MEAT_2_udiv_r_f0 = _FP_DIV_MEAT_2_udiv_n_f0; \
+ if (_FP_FRAC_GT_2 (_FP_DIV_MEAT_2_udiv_m, _FP_DIV_MEAT_2_udiv_r)) \
{ \
R##_f1--; \
- _FP_FRAC_ADD_2 (_r, Y, _r); \
- if (_FP_FRAC_GE_2 (_r, Y) && _FP_FRAC_GT_2 (_m, _r)) \
+ _FP_FRAC_ADD_2 (_FP_DIV_MEAT_2_udiv_r, Y, \
+ _FP_DIV_MEAT_2_udiv_r); \
+ if (_FP_FRAC_GE_2 (_FP_DIV_MEAT_2_udiv_r, Y) \
+ && _FP_FRAC_GT_2 (_FP_DIV_MEAT_2_udiv_m, \
+ _FP_DIV_MEAT_2_udiv_r)) \
{ \
R##_f1--; \
- _FP_FRAC_ADD_2 (_r, Y, _r); \
+ _FP_FRAC_ADD_2 (_FP_DIV_MEAT_2_udiv_r, Y, \
+ _FP_DIV_MEAT_2_udiv_r); \
} \
} \
- _FP_FRAC_DEC_2 (_r, _m); \
+ _FP_FRAC_DEC_2 (_FP_DIV_MEAT_2_udiv_r, _FP_DIV_MEAT_2_udiv_m); \
\
- if (_r_f1 == Y##_f1) \
+ if (_FP_DIV_MEAT_2_udiv_r_f1 == Y##_f1) \
{ \
/* This is a special case, not an optimization \
- (_r/Y##_f1 would not fit into UWtype). \
- As _r is guaranteed to be < Y, R##_f0 can be either \
- (UWtype)-1 or (UWtype)-2. But as we know what kind \
- of bits it is (sticky, guard, round), we don't care. \
- We also don't care what the reminder is, because the \
- guard bit will be set anyway. -jj */ \
+ (_FP_DIV_MEAT_2_udiv_r/Y##_f1 would not fit into UWtype). \
+ As _FP_DIV_MEAT_2_udiv_r is guaranteed to be < Y, \
+ R##_f0 can be either (UWtype)-1 or (UWtype)-2. But as we \
+ know what kind of bits it is (sticky, guard, round), \
+ we don't care. We also don't care what the reminder is, \
+ because the guard bit will be set anyway. -jj */ \
R##_f0 = -1; \
} \
else \
{ \
- udiv_qrnnd (R##_f0, _r_f1, _r_f1, _r_f0, Y##_f1); \
- umul_ppmm (_m_f1, _m_f0, R##_f0, Y##_f0); \
- _r_f0 = 0; \
- if (_FP_FRAC_GT_2 (_m, _r)) \
+ udiv_qrnnd (R##_f0, _FP_DIV_MEAT_2_udiv_r_f1, \
+ _FP_DIV_MEAT_2_udiv_r_f1, \
+ _FP_DIV_MEAT_2_udiv_r_f0, Y##_f1); \
+ umul_ppmm (_FP_DIV_MEAT_2_udiv_m_f1, \
+ _FP_DIV_MEAT_2_udiv_m_f0, R##_f0, Y##_f0); \
+ _FP_DIV_MEAT_2_udiv_r_f0 = 0; \
+ if (_FP_FRAC_GT_2 (_FP_DIV_MEAT_2_udiv_m, \
+ _FP_DIV_MEAT_2_udiv_r)) \
{ \
R##_f0--; \
- _FP_FRAC_ADD_2 (_r, Y, _r); \
- if (_FP_FRAC_GE_2 (_r, Y) && _FP_FRAC_GT_2 (_m, _r)) \
+ _FP_FRAC_ADD_2 (_FP_DIV_MEAT_2_udiv_r, Y, \
+ _FP_DIV_MEAT_2_udiv_r); \
+ if (_FP_FRAC_GE_2 (_FP_DIV_MEAT_2_udiv_r, Y) \
+ && _FP_FRAC_GT_2 (_FP_DIV_MEAT_2_udiv_m, \
+ _FP_DIV_MEAT_2_udiv_r)) \
{ \
R##_f0--; \
- _FP_FRAC_ADD_2 (_r, Y, _r); \
+ _FP_FRAC_ADD_2 (_FP_DIV_MEAT_2_udiv_r, Y, \
+ _FP_DIV_MEAT_2_udiv_r); \
} \
} \
- if (!_FP_FRAC_EQ_2 (_r, _m)) \
+ if (!_FP_FRAC_EQ_2 (_FP_DIV_MEAT_2_udiv_r, \
+ _FP_DIV_MEAT_2_udiv_m)) \
R##_f0 |= _FP_WORK_STICKY; \
} \
} \
while (0)
-/*
- * Square root algorithms:
- * We have just one right now, maybe Newton approximation
- * should be added for those machines where division is fast.
- */
+/* Square root algorithms:
+ We have just one right now, maybe Newton approximation
+ should be added for those machines where division is fast. */
#define _FP_SQRT_MEAT_2(R, S, T, X, q) \
do \
{ \
while (q) \
{ \
- T##_f1 = S##_f1 + q; \
+ T##_f1 = S##_f1 + (q); \
if (T##_f1 <= X##_f1) \
{ \
- S##_f1 = T##_f1 + q; \
+ S##_f1 = T##_f1 + (q); \
X##_f1 -= T##_f1; \
- R##_f1 += q; \
+ R##_f1 += (q); \
} \
_FP_FRAC_SLL_2 (X, 1); \
- q >>= 1; \
+ (q) >>= 1; \
} \
- q = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
- while (q != _FP_WORK_ROUND) \
+ (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
+ while ((q) != _FP_WORK_ROUND) \
{ \
- T##_f0 = S##_f0 + q; \
+ T##_f0 = S##_f0 + (q); \
T##_f1 = S##_f1; \
if (T##_f1 < X##_f1 \
|| (T##_f1 == X##_f1 && T##_f0 <= X##_f0)) \
{ \
- S##_f0 = T##_f0 + q; \
+ S##_f0 = T##_f0 + (q); \
S##_f1 += (T##_f0 > S##_f0); \
_FP_FRAC_DEC_2 (X, T); \
- R##_f0 += q; \
+ R##_f0 += (q); \
} \
_FP_FRAC_SLL_2 (X, 1); \
- q >>= 1; \
+ (q) >>= 1; \
} \
if (X##_f0 | X##_f1) \
{ \
while (0)
-/*
- * Assembly/disassembly for converting to/from integral types.
- * No shifting or overflow handled here.
- */
+/* Assembly/disassembly for converting to/from integral types.
+ No shifting or overflow handled here. */
#define _FP_FRAC_ASSEMBLE_2(r, X, rsize) \
- (void) ((rsize <= _FP_W_TYPE_SIZE) \
- ? ({ r = X##_f0; }) \
+ (void) (((rsize) <= _FP_W_TYPE_SIZE) \
+ ? ({ (r) = X##_f0; }) \
: ({ \
- r = X##_f1; \
- r <<= _FP_W_TYPE_SIZE; \
- r += X##_f0; \
+ (r) = X##_f1; \
+ (r) <<= _FP_W_TYPE_SIZE; \
+ (r) += X##_f0; \
}))
-#define _FP_FRAC_DISASSEMBLE_2(X, r, rsize) \
- do \
- { \
- X##_f0 = r; \
- X##_f1 = (rsize <= _FP_W_TYPE_SIZE ? 0 : r >> _FP_W_TYPE_SIZE); \
- } \
+#define _FP_FRAC_DISASSEMBLE_2(X, r, rsize) \
+ do \
+ { \
+ X##_f0 = (r); \
+ X##_f1 = ((rsize) <= _FP_W_TYPE_SIZE \
+ ? 0 \
+ : (r) >> _FP_W_TYPE_SIZE); \
+ } \
while (0)
-/*
- * Convert FP values between word sizes
- */
+/* Convert FP values between word sizes. */
#define _FP_FRAC_COPY_1_2(D, S) (D##_f = S##_f0)
#define _FP_FRAC_COPY_2_1(D, S) ((D##_f0 = S##_f), (D##_f1 = 0))
#define _FP_FRAC_COPY_2_2(D, S) _FP_FRAC_COPY_2 (D, S)
+
+#endif /* !SOFT_FP_OP_2_H */
projects / thirdparty / glibc.git / blobdiff