diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_lround.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_lround.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_lround.c b/sysdeps/ieee754/dbl-64/s_lround.c index 91b17b0de9..699eafb010 100644 --- a/sysdeps/ieee754/dbl-64/s_lround.c +++ b/sysdeps/ieee754/dbl-64/s_lround.c @@ -22,6 +22,7 @@ #include <math.h> #include <math_private.h> +#include <fix-fp-int-convert-overflow.h> long int @@ -80,8 +81,18 @@ __lround (double x) FE_INVALID must be raised and the return value is unspecified. */ #ifdef FE_INVALID - if (sizeof (long int) == 4 - && x <= (double) LONG_MIN - 0.5) + if (FIX_DBL_LONG_CONVERT_OVERFLOW + && !(sign == -1 + && (sizeof (long int) == 4 + ? x > (double) LONG_MIN - 0.5 + : x >= (double) LONG_MIN))) + { + feraiseexcept (FE_INVALID); + return sign == 1 ? LONG_MAX : LONG_MIN; + } + else if (!FIX_DBL_LONG_CONVERT_OVERFLOW + && sizeof (long int) == 4 + && x <= (double) LONG_MIN - 0.5) { /* If truncation produces LONG_MIN, the cast will not raise the exception, but may raise "inexact". */ |