diff options
| -rw-r--r-- | configure.in | 7 | ||||
| -rw-r--r-- | eint.c | 5 | ||||
| -rw-r--r-- | erfc.c | 5 | ||||
| -rw-r--r-- | mpfr-impl.h | 18 |
4 files changed, 31 insertions, 4 deletions
diff --git a/configure.in b/configure.in index 2d9d8bfb9..4570357de 100644 --- a/configure.in +++ b/configure.in @@ -83,6 +83,13 @@ AC_ARG_ENABLE(thread-safe, no) ;; *) AC_MSG_ERROR([bad value for --enable-thread-safe: yes or no]) ;; esac]) +AC_ARG_ENABLE(warnings, + [ --enable-warnings allow MPFR to output warnings to stderr [[default=no]]], + [ case $enableval in + yes) AC_DEFINE([MPFR_USE_WARNINGS],1,[Allow MPFR to output warnings to stderr]) ;; + no) ;; + *) AC_MSG_ERROR([bad value for --enable-warnings: yes or no]) ;; + esac]) AC_ARG_ENABLE(decimal-float, [ --enable-decimal-float build conversion functions from/to decimal floats [[default=no]]], [ case $enableval in @@ -19,7 +19,8 @@ along with the MPFR Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ -#include <stdio.h> +#include <stdio.h> /* for MPFR_WARNING */ +#include <stdlib.h> /* for MPFR_WARNING */ #include <limits.h> #define MPFR_NEED_LONGLONG_H #include "mpfr-impl.h" @@ -232,7 +233,7 @@ mpfr_eint (mpfr_ptr y, mpfr_srcptr x, mp_rnd_t rnd) /* FIXME: Improve the algorithm to be able to compute the actual value. For the time being, we regard this as a range error, so that the caller can cleanly deal with the problem. */ - fprintf (stderr, "MPFR: Error, too large input in mpfr_eint\n"); + MPFR_WARNING ("Too large input in mpfr_eint, returning NaN"); MPFR_ZIV_FREE (loop); mpfr_clear (tmp); mpfr_clear (ump); @@ -19,7 +19,8 @@ along with the MPFR Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ -#include <stdio.h> /* for fprintf and stderr */ +#include <stdio.h> /* for MPFR_WARNING */ +#include <stdlib.h> /* for MPFR_WARNING */ #define MPFR_NEED_LONGLONG_H #include "mpfr-impl.h" @@ -62,7 +63,7 @@ mpfr_erfc (mpfr_ptr y, mpfr_srcptr x, mp_rnd_t rnd) /* FIXME: Improve the algorithm to be able to compute the actual value. For the time being, we regard this as a range error, so that the caller can cleanly deal with the problem. */ - fprintf (stderr, "MPFR: Error, too large input in mpfr_erfc\n"); + MPFR_WARNING ("Too large input in mpfr_erfc, returning NaN"); MPFR_SET_ERANGE (); MPFR_SET_NAN (y); MPFR_RET_NAN; diff --git a/mpfr-impl.h b/mpfr-impl.h index b3f19eff8..3d2854a69 100644 --- a/mpfr-impl.h +++ b/mpfr-impl.h @@ -280,6 +280,24 @@ __MPFR_DECLSPEC extern const mpfr_t __gmpfr_four; #define MPFR_RET_NEVER_GO_HERE() {MPFR_ASSERTN(0); return 0;} +/****************************************************** + ******************** Warnings ************************ + ******************************************************/ + +#ifdef MPFR_USE_WARNINGS +/* Note: needs <stdio.h> and <stdlib.h> */ +# define MPFR_WARNING(W) \ + do \ + { \ + char *q = getenv ("MPFR_QUIET"); \ + if (q == NULL || *q == 0) \ + fprintf (stderr, "MPFR: %s\n", W); \ + } \ + while (0) +#else +# define MPFR_WARNING(W) ((void) 0) +#endif + /****************************************************** ****************** double macros ********************* |