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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c')
-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c76
1 files changed, 44 insertions, 32 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c b/Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c
index 1c87ad24409..ee83d65b7fb 100644
--- a/Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c
+++ b/Build/source/libs/mpfr/mpfr-src/src/round_raw_generic.c
@@ -1,6 +1,6 @@
/* mpfr_round_raw_generic -- Generic rounding function
-Copyright 1999-2019 Free Software Foundation, Inc.
+Copyright 1999-2020 Free Software Foundation, Inc.
Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
@@ -54,6 +54,10 @@ https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
* may change in the future without notice.
*/
+#if !(flag == 0 || flag == 1)
+#error "flag must be 0 or 1"
+#endif
+
int
mpfr_round_raw_generic(
#if flag == 0
@@ -72,20 +76,21 @@ mpfr_round_raw_generic(
#if flag == 0
int carry;
#endif
-#if use_inexp == 0
- int *inexp;
-#endif
- if (use_inexp)
- MPFR_ASSERTD(inexp != ((int*) 0));
- MPFR_ASSERTD(neg == 0 || neg == 1);
+#if use_inexp != 0
+ MPFR_ASSERTD (inexp != ((int*) 0));
+#endif
+ MPFR_ASSERTD (neg == 0 || neg == 1);
+#if flag == 1
+ /* rnd_mode = RNDF is only possible for flag = 0. */
+ MPFR_ASSERTD (rnd_mode != MPFR_RNDF);
+#endif
if (rnd_mode == MPFR_RNDF)
{
- if (use_inexp)
- *inexp = 0; /* make sure it has a valid value */
- if (flag)
- return 0;
+#if use_inexp != 0
+ *inexp = 0; /* make sure it has a valid value */
+#endif
rnd_mode = MPFR_RNDZ; /* faster */
new_use_inexp = 0;
}
@@ -108,8 +113,9 @@ mpfr_round_raw_generic(
nw++;
MPFR_ASSERTD(nw >= 1);
MPFR_ASSERTD(nw >= xsize);
- if (use_inexp)
- *inexp = 0;
+#if use_inexp != 0
+ *inexp = 0;
+#endif
#if flag == 0
mpn_copyd (yp + (nw - xsize), xp, xsize);
MPN_ZERO(yp, nw - xsize);
@@ -154,8 +160,9 @@ mpfr_round_raw_generic(
sb = xp[xsize - nw] & (himask ^ (himask << 1));
if (sb == 0)
{
- if (use_inexp)
- *inexp = 2*MPFR_EVEN_INEX*neg-MPFR_EVEN_INEX;
+#if use_inexp != 0
+ *inexp = 2 * MPFR_EVEN_INEX * neg - MPFR_EVEN_INEX;
+#endif
/* ((neg!=0)^(sb!=0)) ? MPFR_EVEN_INEX : -MPFR_EVEN_INEX */
/* since neg = 0 or 1 and sb = 0 */
#if flag == 0
@@ -168,8 +175,9 @@ mpfr_round_raw_generic(
{
away_addone_ulp:
/* sb != 0 && rnd_mode == MPFR_RNDN */
- if (use_inexp)
- *inexp = MPFR_EVEN_INEX-2*MPFR_EVEN_INEX*neg;
+#if use_inexp != 0
+ *inexp = MPFR_EVEN_INEX - 2 * MPFR_EVEN_INEX * neg;
+#endif
/* ((neg!=0)^(sb!=0)) ? MPFR_EVEN_INEX : -MPFR_EVEN_INEX */
/* since neg = 0 or 1 and sb != 0 */
goto rnd_RNDN_add_one_ulp;
@@ -177,8 +185,9 @@ mpfr_round_raw_generic(
}
else /* sb != 0 && rnd_mode == MPFR_RNDN */
{
- if (use_inexp)
- *inexp = 1-2*neg; /* neg == 0 ? 1 : -1 */
+#if use_inexp != 0
+ *inexp = 1 - 2 * neg; /* neg == 0 ? 1 : -1 */
+#endif
rnd_RNDN_add_one_ulp:
#if flag == 1
return 1; /* sb != 0 && rnd_mode != MPFR_RNDZ */
@@ -197,12 +206,13 @@ mpfr_round_raw_generic(
{
/* rnd_mode == MPFR_RNDZ */
rnd_RNDZ:
- while (MPFR_UNLIKELY(sb == 0) && k > 0)
+ while (MPFR_UNLIKELY (sb == 0) && k > 0)
sb = xp[--k];
- if (use_inexp)
- /* rnd_mode == MPFR_RNDZ and neg = 0 or 1 */
- /* ((neg != 0) ^ (rnd_mode != MPFR_RNDZ)) ? 1 : -1 */
- *inexp = MPFR_UNLIKELY(sb == 0) ? 0 : (2*neg-1);
+#if use_inexp != 0
+ /* rnd_mode == MPFR_RNDZ and neg = 0 or 1 */
+ /* ((neg != 0) ^ (rnd_mode != MPFR_RNDZ)) ? 1 : -1 */
+ *inexp = MPFR_UNLIKELY (sb == 0) ? 0 : 2 * neg - 1;
+#endif
#if flag == 0
mpn_copyi (yp, xp + xsize - nw, nw);
yp[0] &= himask;
@@ -212,14 +222,15 @@ mpfr_round_raw_generic(
else
{
/* Rounding away from zero */
- while (MPFR_UNLIKELY(sb == 0) && k > 0)
+ while (MPFR_UNLIKELY (sb == 0) && k > 0)
sb = xp[--k];
- if (MPFR_UNLIKELY(sb == 0))
+ if (MPFR_UNLIKELY (sb == 0))
{
/* sb = 0 && rnd_mode != MPFR_RNDZ */
- if (use_inexp)
- /* ((neg != 0) ^ (rnd_mode != MPFR_RNDZ)) ? 1 : -1 */
- *inexp = 0;
+#if use_inexp != 0
+ /* ((neg != 0) ^ (rnd_mode != MPFR_RNDZ)) ? 1 : -1 */
+ *inexp = 0;
+#endif
#if flag == 0
mpn_copyi (yp, xp + xsize - nw, nw);
yp[0] &= himask;
@@ -229,14 +240,15 @@ mpfr_round_raw_generic(
else
{
/* sb != 0 && rnd_mode != MPFR_RNDZ */
- if (use_inexp)
- *inexp = 1-2*neg; /* neg == 0 ? 1 : -1 */
+#if use_inexp != 0
+ *inexp = 1 - 2 * neg; /* neg == 0 ? 1 : -1 */
+#endif
#if flag == 1
return 1;
#else
carry = mpn_add_1(yp, xp + xsize - nw, nw,
rw ? MPFR_LIMB_ONE << (GMP_NUMB_BITS - rw)
- : 1);
+ : MPFR_LIMB_ONE);
yp[0] &= himask;
return carry;
#endif