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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-10-09 19:21:56 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-10-09 19:21:56 +0200 |
| commit | 525c181a5a9a95e24d2111b7792608151a40eb84 (patch) | |
| tree | 8ba16eeb3fb7327e5c3c5bba9c5786d4bb6ccec1 /sysdeps/ieee754/dbl-64/s_llround.c | |
| parent | 4dd9e35bfd35d3138bc44169baba098005bad51e (diff) | |
| parent | 7bb5f8a836b916d6ebf7b6921b136e99cea2442d (diff) | |
Merge commit 'refs/top-bases/t/bigmem' into t/bigmem
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_llround.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_llround.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_llround.c b/sysdeps/ieee754/dbl-64/s_llround.c index c8b3c190b5..1d6a5205f1 100644 --- a/sysdeps/ieee754/dbl-64/s_llround.c +++ b/sysdeps/ieee754/dbl-64/s_llround.c @@ -1,5 +1,5 @@ /* Round double value to long long int. - Copyright (C) 1997-2015 Free Software Foundation, Inc. + Copyright (C) 1997-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -17,9 +17,12 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#include <fenv.h> +#include <limits.h> #include <math.h> #include <math_private.h> +#include <fix-fp-int-convert-overflow.h> long long int @@ -65,8 +68,16 @@ __llround (double x) } else { - /* The number is too large. It is left implementation defined - what happens. */ +#ifdef FE_INVALID + /* The number is too large. Unless it rounds to LLONG_MIN, + FE_INVALID must be raised and the return value is + unspecified. */ + if (FIX_DBL_LLONG_CONVERT_OVERFLOW && x != (double) LLONG_MIN) + { + feraiseexcept (FE_INVALID); + return sign == 1 ? LLONG_MAX : LLONG_MIN; + } +#endif return (long long int) x; } |