diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_lroundf.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_lroundf.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/sysdeps/ieee754/flt-32/s_lroundf.c b/sysdeps/ieee754/flt-32/s_lroundf.c index f20352a3c8..116c9e0627 100644 --- a/sysdeps/ieee754/flt-32/s_lroundf.c +++ b/sysdeps/ieee754/flt-32/s_lroundf.c @@ -1,5 +1,5 @@ /* Round float value to 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 int @@ -51,8 +54,16 @@ __lroundf (float 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 LONG_MIN, + FE_INVALID must be raised and the return value is + unspecified. */ + if (FIX_FLT_LONG_CONVERT_OVERFLOW && x != (float) LONG_MIN) + { + feraiseexcept (FE_INVALID); + return sign == 1 ? LONG_MAX : LONG_MIN; + } +#endif return (long int) x; } |