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Diffstat (limited to 'Build/source/libs/mpfr/mpfr-src/src/div_2ui.c')
-rw-r--r--Build/source/libs/mpfr/mpfr-src/src/div_2ui.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/Build/source/libs/mpfr/mpfr-src/src/div_2ui.c b/Build/source/libs/mpfr/mpfr-src/src/div_2ui.c
index 12df43bb760..71ce188c8d7 100644
--- a/Build/source/libs/mpfr/mpfr-src/src/div_2ui.c
+++ b/Build/source/libs/mpfr/mpfr-src/src/div_2ui.c
@@ -1,7 +1,7 @@
/* mpfr_div_2ui -- divide a floating-point number by a power of two
-Copyright 1999, 2001-2015 Free Software Foundation, Inc.
-Contributed by the AriC and Caramel projects, INRIA.
+Copyright 1999, 2001-2016 Free Software Foundation, Inc.
+Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
@@ -32,7 +32,7 @@ mpfr_div_2ui (mpfr_ptr y, mpfr_srcptr x, unsigned long n, mpfr_rnd_t rnd_mode)
rnd_mode),
("y[%Pu]=%.*Rg inexact=%d", mpfr_get_prec(y), mpfr_log_prec, y, inexact));
- if (MPFR_UNLIKELY (MPFR_IS_SINGULAR (x)))
+ if (MPFR_UNLIKELY (n == 0 || MPFR_IS_SINGULAR (x)))
return mpfr_set (y, x, rnd_mode);
else
{
@@ -44,7 +44,9 @@ mpfr_div_2ui (mpfr_ptr y, mpfr_srcptr x, unsigned long n, mpfr_rnd_t rnd_mode)
if (MPFR_UNLIKELY (n >= diffexp)) /* exp - n <= emin - 1 */
{
if (rnd_mode == MPFR_RNDN &&
- (n > diffexp || (inexact >= 0 && mpfr_powerof2_raw (y))))
+ (n > diffexp ||
+ ((MPFR_IS_NEG (y) ? inexact <= 0 : inexact >= 0) &&
+ mpfr_powerof2_raw (y))))
rnd_mode = MPFR_RNDZ;
return mpfr_underflow (y, rnd_mode, MPFR_SIGN (y));
}