/* Software floating-point emulation.
Definitions for IEEE Extended Precision.
- Copyright (C) 1999-2013 Free Software Foundation, Inc.
+ Copyright (C) 1999-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by 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/>. */
+
+#ifndef SOFT_FP_EXTENDED_H
+#define SOFT_FP_EXTENDED_H 1
#if _FP_W_TYPE_SIZE < 32
# error "Here's a nickel, kid. Go buy yourself a real computer."
unsigned exp : _FP_EXPBITS_E;
unsigned sign : 1;
# endif /* not bigendian */
- } bits __attribute__ ((packed));
+ } bits;
};
# define FP_DECL_E(X) _FP_DECL (4, X)
-# define FP_UNPACK_RAW_E(X, val) \
- do \
- { \
- union _FP_UNION_E _flo; \
- _flo.flt = (val); \
- \
- X##_f[2] = 0; \
- X##_f[3] = 0; \
- X##_f[0] = _flo.bits.frac0; \
- X##_f[1] = _flo.bits.frac1; \
- X##_e = _flo.bits.exp; \
- X##_s = _flo.bits.sign; \
- } \
+# define FP_UNPACK_RAW_E(X, val) \
+ do \
+ { \
+ union _FP_UNION_E FP_UNPACK_RAW_E_flo; \
+ FP_UNPACK_RAW_E_flo.flt = (val); \
+ \
+ X##_f[2] = 0; \
+ X##_f[3] = 0; \
+ X##_f[0] = FP_UNPACK_RAW_E_flo.bits.frac0; \
+ X##_f[1] = FP_UNPACK_RAW_E_flo.bits.frac1; \
+ X##_f[1] &= ~_FP_IMPLBIT_E; \
+ X##_e = FP_UNPACK_RAW_E_flo.bits.exp; \
+ X##_s = FP_UNPACK_RAW_E_flo.bits.sign; \
+ } \
while (0)
-# define FP_UNPACK_RAW_EP(X, val) \
- do \
- { \
- union _FP_UNION_E *_flo = (union _FP_UNION_E *) (val); \
- \
- X##_f[2] = 0; \
- X##_f[3] = 0; \
- X##_f[0] = _flo->bits.frac0; \
- X##_f[1] = _flo->bits.frac1; \
- X##_e = _flo->bits.exp; \
- X##_s = _flo->bits.sign; \
- } \
+# define FP_UNPACK_RAW_EP(X, val) \
+ do \
+ { \
+ union _FP_UNION_E *FP_UNPACK_RAW_EP_flo \
+ = (union _FP_UNION_E *) (val); \
+ \
+ X##_f[2] = 0; \
+ X##_f[3] = 0; \
+ X##_f[0] = FP_UNPACK_RAW_EP_flo->bits.frac0; \
+ X##_f[1] = FP_UNPACK_RAW_EP_flo->bits.frac1; \
+ X##_f[1] &= ~_FP_IMPLBIT_E; \
+ X##_e = FP_UNPACK_RAW_EP_flo->bits.exp; \
+ X##_s = FP_UNPACK_RAW_EP_flo->bits.sign; \
+ } \
while (0)
# define FP_PACK_RAW_E(val, X) \
do \
{ \
- union _FP_UNION_E _flo; \
+ union _FP_UNION_E FP_PACK_RAW_E_flo; \
\
if (X##_e) \
X##_f[1] |= _FP_IMPLBIT_E; \
else \
X##_f[1] &= ~(_FP_IMPLBIT_E); \
- _flo.bits.frac0 = X##_f[0]; \
- _flo.bits.frac1 = X##_f[1]; \
- _flo.bits.exp = X##_e; \
- _flo.bits.sign = X##_s; \
+ FP_PACK_RAW_E_flo.bits.frac0 = X##_f[0]; \
+ FP_PACK_RAW_E_flo.bits.frac1 = X##_f[1]; \
+ FP_PACK_RAW_E_flo.bits.exp = X##_e; \
+ FP_PACK_RAW_E_flo.bits.sign = X##_s; \
\
- (val) = _flo.flt; \
+ (val) = FP_PACK_RAW_E_flo.flt; \
} \
while (0)
-# define FP_PACK_RAW_EP(val, X) \
- do \
- { \
- if (!FP_INHIBIT_RESULTS) \
- { \
- union _FP_UNION_E *_flo = (union _FP_UNION_E *) (val); \
- \
- if (X##_e) \
- X##_f[1] |= _FP_IMPLBIT_E; \
- else \
- X##_f[1] &= ~(_FP_IMPLBIT_E); \
- _flo->bits.frac0 = X##_f[0]; \
- _flo->bits.frac1 = X##_f[1]; \
- _flo->bits.exp = X##_e; \
- _flo->bits.sign = X##_s; \
- } \
- } \
+# define FP_PACK_RAW_EP(val, X) \
+ do \
+ { \
+ if (!FP_INHIBIT_RESULTS) \
+ { \
+ union _FP_UNION_E *FP_PACK_RAW_EP_flo \
+ = (union _FP_UNION_E *) (val); \
+ \
+ if (X##_e) \
+ X##_f[1] |= _FP_IMPLBIT_E; \
+ else \
+ X##_f[1] &= ~(_FP_IMPLBIT_E); \
+ FP_PACK_RAW_EP_flo->bits.frac0 = X##_f[0]; \
+ FP_PACK_RAW_EP_flo->bits.frac1 = X##_f[1]; \
+ FP_PACK_RAW_EP_flo->bits.exp = X##_e; \
+ FP_PACK_RAW_EP_flo->bits.sign = X##_s; \
+ } \
+ } \
while (0)
# define FP_UNPACK_E(X, val) \
do \
{ \
- FP_UNPACK_RAW_E (X, val); \
+ FP_UNPACK_RAW_E (X, (val)); \
_FP_UNPACK_CANONICAL (E, 4, X); \
} \
while (0)
# define FP_UNPACK_EP(X, val) \
do \
{ \
- FP_UNPACK_RAW_EP (X, val); \
+ FP_UNPACK_RAW_EP (X, (val)); \
_FP_UNPACK_CANONICAL (E, 4, X); \
} \
while (0)
# define FP_UNPACK_SEMIRAW_E(X, val) \
do \
{ \
- FP_UNPACK_RAW_E (X, val); \
+ FP_UNPACK_RAW_E (X, (val)); \
_FP_UNPACK_SEMIRAW (E, 4, X); \
} \
while (0)
# define FP_UNPACK_SEMIRAW_EP(X, val) \
do \
{ \
- FP_UNPACK_RAW_EP (X, val); \
+ FP_UNPACK_RAW_EP (X, (val)); \
_FP_UNPACK_SEMIRAW (E, 4, X); \
} \
while (0)
do \
{ \
_FP_PACK_CANONICAL (E, 4, X); \
- FP_PACK_RAW_E (val, X); \
+ FP_PACK_RAW_E ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_CANONICAL (E, 4, X); \
- FP_PACK_RAW_EP (val, X); \
+ FP_PACK_RAW_EP ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_SEMIRAW (E, 4, X); \
- FP_PACK_RAW_E (val, X); \
+ FP_PACK_RAW_E ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_SEMIRAW (E, 4, X); \
- FP_PACK_RAW_EP (val, X); \
+ FP_PACK_RAW_EP ((val), X); \
} \
while (0)
# define FP_SQRT_E(R, X) _FP_SQRT (E, 4, R, X)
# define FP_FMA_E(R, X, Y, Z) _FP_FMA (E, 4, 8, R, X, Y, Z)
-/*
- * Square root algorithms:
- * We have just one right now, maybe Newton approximation
- * should be added for those machines where division is fast.
- * This has special _E version because standard _4 square
- * root would not work (it has to start normally with the
- * second word and not the first), but as we have to do it
- * anyway, we optimize it by doing most of the calculations
- * in two UWtype registers instead of four.
- */
+/* Square root algorithms:
+ We have just one right now, maybe Newton approximation
+ should be added for those machines where division is fast.
+ This has special _E version because standard _4 square
+ root would not work (it has to start normally with the
+ second word and not the first), but as we have to do it
+ anyway, we optimize it by doing most of the calculations
+ in two UWtype registers instead of four. */
# define _FP_SQRT_MEAT_E(R, S, T, X, q) \
do \
{ \
- q = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
+ (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
_FP_FRAC_SRL_4 (X, (_FP_WORKBITS)); \
while (q) \
{ \
- T##_f[1] = S##_f[1] + q; \
+ T##_f[1] = S##_f[1] + (q); \
if (T##_f[1] <= X##_f[1]) \
{ \
- S##_f[1] = T##_f[1] + q; \
+ S##_f[1] = T##_f[1] + (q); \
X##_f[1] -= T##_f[1]; \
- R##_f[1] += q; \
+ R##_f[1] += (q); \
} \
_FP_FRAC_SLL_2 (X, 1); \
- q >>= 1; \
+ (q) >>= 1; \
} \
- q = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
+ (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
while (q) \
{ \
- T##_f[0] = S##_f[0] + q; \
+ T##_f[0] = S##_f[0] + (q); \
T##_f[1] = S##_f[1]; \
if (T##_f[1] < X##_f[1] \
|| (T##_f[1] == X##_f[1] \
&& T##_f[0] <= X##_f[0])) \
{ \
- S##_f[0] = T##_f[0] + q; \
+ S##_f[0] = T##_f[0] + (q); \
S##_f[1] += (T##_f[0] > S##_f[0]); \
_FP_FRAC_DEC_2 (X, T); \
- R##_f[0] += q; \
+ R##_f[0] += (q); \
} \
_FP_FRAC_SLL_2 (X, 1); \
- q >>= 1; \
+ (q) >>= 1; \
} \
_FP_FRAC_SLL_4 (R, (_FP_WORKBITS)); \
if (X##_f[0] | X##_f[1]) \
} \
while (0)
-# define FP_CMP_E(r, X, Y, un) _FP_CMP (E, 4, r, X, Y, un)
-# define FP_CMP_EQ_E(r, X, Y) _FP_CMP_EQ (E, 4, r, X, Y)
-# define FP_CMP_UNORD_E(r, X, Y) _FP_CMP_UNORD (E, 4, r, X, Y)
+# define FP_CMP_E(r, X, Y, un, ex) _FP_CMP (E, 4, (r), X, Y, (un), (ex))
+# define FP_CMP_EQ_E(r, X, Y, ex) _FP_CMP_EQ (E, 4, (r), X, Y, (ex))
+# define FP_CMP_UNORD_E(r, X, Y, ex) _FP_CMP_UNORD (E, 4, (r), X, Y, (ex))
-# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 4, r, X, rsz, rsg)
-# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 4, X, r, rs, rt)
+# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 4, (r), X, (rsz), (rsg))
+# define FP_TO_INT_ROUND_E(r, X, rsz, rsg) \
+ _FP_TO_INT_ROUND (E, 4, (r), X, (rsz), (rsg))
+# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 4, X, (r), (rs), rt)
# define _FP_FRAC_HIGH_E(X) (X##_f[2])
# define _FP_FRAC_HIGH_RAW_E(X) (X##_f[1])
# define FP_UNPACK_RAW_E(X, val) \
do \
{ \
- union _FP_UNION_E _flo; \
- _flo.flt = (val); \
+ union _FP_UNION_E FP_UNPACK_RAW_E_flo; \
+ FP_UNPACK_RAW_E_flo.flt = (val); \
\
- X##_f0 = _flo.bits.frac; \
+ X##_f0 = FP_UNPACK_RAW_E_flo.bits.frac; \
+ X##_f0 &= ~_FP_IMPLBIT_E; \
X##_f1 = 0; \
- X##_e = _flo.bits.exp; \
- X##_s = _flo.bits.sign; \
+ X##_e = FP_UNPACK_RAW_E_flo.bits.exp; \
+ X##_s = FP_UNPACK_RAW_E_flo.bits.sign; \
} \
while (0)
-# define FP_UNPACK_RAW_EP(X, val) \
- do \
- { \
- union _FP_UNION_E *_flo = (union _FP_UNION_E *) (val); \
- \
- X##_f0 = _flo->bits.frac; \
- X##_f1 = 0; \
- X##_e = _flo->bits.exp; \
- X##_s = _flo->bits.sign; \
- } \
+# define FP_UNPACK_RAW_EP(X, val) \
+ do \
+ { \
+ union _FP_UNION_E *FP_UNPACK_RAW_EP_flo \
+ = (union _FP_UNION_E *) (val); \
+ \
+ X##_f0 = FP_UNPACK_RAW_EP_flo->bits.frac; \
+ X##_f0 &= ~_FP_IMPLBIT_E; \
+ X##_f1 = 0; \
+ X##_e = FP_UNPACK_RAW_EP_flo->bits.exp; \
+ X##_s = FP_UNPACK_RAW_EP_flo->bits.sign; \
+ } \
while (0)
# define FP_PACK_RAW_E(val, X) \
do \
{ \
- union _FP_UNION_E _flo; \
+ union _FP_UNION_E FP_PACK_RAW_E_flo; \
\
if (X##_e) \
X##_f0 |= _FP_IMPLBIT_E; \
else \
X##_f0 &= ~(_FP_IMPLBIT_E); \
- _flo.bits.frac = X##_f0; \
- _flo.bits.exp = X##_e; \
- _flo.bits.sign = X##_s; \
+ FP_PACK_RAW_E_flo.bits.frac = X##_f0; \
+ FP_PACK_RAW_E_flo.bits.exp = X##_e; \
+ FP_PACK_RAW_E_flo.bits.sign = X##_s; \
\
- (val) = _flo.flt; \
+ (val) = FP_PACK_RAW_E_flo.flt; \
} \
while (0)
-# define FP_PACK_RAW_EP(fs, val, X) \
- do \
- { \
- if (!FP_INHIBIT_RESULTS) \
- { \
- union _FP_UNION_E *_flo = (union _FP_UNION_E *) (val); \
- \
- if (X##_e) \
- X##_f0 |= _FP_IMPLBIT_E; \
- else \
- X##_f0 &= ~(_FP_IMPLBIT_E); \
- _flo->bits.frac = X##_f0; \
- _flo->bits.exp = X##_e; \
- _flo->bits.sign = X##_s; \
- } \
- } \
+# define FP_PACK_RAW_EP(fs, val, X) \
+ do \
+ { \
+ if (!FP_INHIBIT_RESULTS) \
+ { \
+ union _FP_UNION_E *FP_PACK_RAW_EP_flo \
+ = (union _FP_UNION_E *) (val); \
+ \
+ if (X##_e) \
+ X##_f0 |= _FP_IMPLBIT_E; \
+ else \
+ X##_f0 &= ~(_FP_IMPLBIT_E); \
+ FP_PACK_RAW_EP_flo->bits.frac = X##_f0; \
+ FP_PACK_RAW_EP_flo->bits.exp = X##_e; \
+ FP_PACK_RAW_EP_flo->bits.sign = X##_s; \
+ } \
+ } \
while (0)
# define FP_UNPACK_E(X, val) \
do \
{ \
- FP_UNPACK_RAW_E (X, val); \
+ FP_UNPACK_RAW_E (X, (val)); \
_FP_UNPACK_CANONICAL (E, 2, X); \
} \
while (0)
# define FP_UNPACK_EP(X, val) \
do \
{ \
- FP_UNPACK_RAW_EP (X, val); \
+ FP_UNPACK_RAW_EP (X, (val)); \
_FP_UNPACK_CANONICAL (E, 2, X); \
} \
while (0)
# define FP_UNPACK_SEMIRAW_E(X, val) \
do \
{ \
- FP_UNPACK_RAW_E (X, val); \
+ FP_UNPACK_RAW_E (X, (val)); \
_FP_UNPACK_SEMIRAW (E, 2, X); \
} \
while (0)
# define FP_UNPACK_SEMIRAW_EP(X, val) \
do \
{ \
- FP_UNPACK_RAW_EP (X, val); \
+ FP_UNPACK_RAW_EP (X, (val)); \
_FP_UNPACK_SEMIRAW (E, 2, X); \
} \
while (0)
do \
{ \
_FP_PACK_CANONICAL (E, 2, X); \
- FP_PACK_RAW_E (val, X); \
+ FP_PACK_RAW_E ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_CANONICAL (E, 2, X); \
- FP_PACK_RAW_EP (val, X); \
+ FP_PACK_RAW_EP ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_SEMIRAW (E, 2, X); \
- FP_PACK_RAW_E (val, X); \
+ FP_PACK_RAW_E ((val), X); \
} \
while (0)
do \
{ \
_FP_PACK_SEMIRAW (E, 2, X); \
- FP_PACK_RAW_EP (val, X); \
+ FP_PACK_RAW_EP ((val), X); \
} \
while (0)
# define FP_SQRT_E(R, X) _FP_SQRT (E, 2, R, X)
# define FP_FMA_E(R, X, Y, Z) _FP_FMA (E, 2, 4, R, X, Y, Z)
-/*
- * Square root algorithms:
- * We have just one right now, maybe Newton approximation
- * should be added for those machines where division is fast.
- * We optimize it by doing most of the calculations
- * in one UWtype registers instead of two, although we don't
- * have to.
- */
+/* Square root algorithms:
+ We have just one right now, maybe Newton approximation
+ should be added for those machines where division is fast.
+ We optimize it by doing most of the calculations
+ in one UWtype registers instead of two, although we don't
+ have to. */
# define _FP_SQRT_MEAT_E(R, S, T, X, q) \
do \
{ \
- q = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
+ (q) = (_FP_W_TYPE) 1 << (_FP_W_TYPE_SIZE - 1); \
_FP_FRAC_SRL_2 (X, (_FP_WORKBITS)); \
while (q) \
{ \
- T##_f0 = S##_f0 + q; \
+ T##_f0 = S##_f0 + (q); \
if (T##_f0 <= X##_f0) \
{ \
- S##_f0 = T##_f0 + q; \
+ S##_f0 = T##_f0 + (q); \
X##_f0 -= T##_f0; \
- R##_f0 += q; \
+ R##_f0 += (q); \
} \
_FP_FRAC_SLL_1 (X, 1); \
- q >>= 1; \
+ (q) >>= 1; \
} \
_FP_FRAC_SLL_2 (R, (_FP_WORKBITS)); \
if (X##_f0) \
} \
while (0)
-# define FP_CMP_E(r, X, Y, un) _FP_CMP (E, 2, r, X, Y, un)
-# define FP_CMP_EQ_E(r, X, Y) _FP_CMP_EQ (E, 2, r, X, Y)
-# define FP_CMP_UNORD_E(r, X, Y) _FP_CMP_UNORD (E, 2, r, X, Y)
+# define FP_CMP_E(r, X, Y, un, ex) _FP_CMP (E, 2, (r), X, Y, (un), (ex))
+# define FP_CMP_EQ_E(r, X, Y, ex) _FP_CMP_EQ (E, 2, (r), X, Y, (ex))
+# define FP_CMP_UNORD_E(r, X, Y, ex) _FP_CMP_UNORD (E, 2, (r), X, Y, (ex))
-# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 2, r, X, rsz, rsg)
-# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 2, X, r, rs, rt)
+# define FP_TO_INT_E(r, X, rsz, rsg) _FP_TO_INT (E, 2, (r), X, (rsz), (rsg))
+# define FP_TO_INT_ROUND_E(r, X, rsz, rsg) \
+ _FP_TO_INT_ROUND (E, 2, (r), X, (rsz), (rsg))
+# define FP_FROM_INT_E(X, r, rs, rt) _FP_FROM_INT (E, 2, X, (r), (rs), rt)
# define _FP_FRAC_HIGH_E(X) (X##_f1)
# define _FP_FRAC_HIGH_RAW_E(X) (X##_f0)
# define _FP_FRAC_HIGH_DW_E(X) (X##_f[2])
#endif /* not _FP_W_TYPE_SIZE < 64 */
+
+#endif /* !SOFT_FP_EXTENDED_H */
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