diff options
Diffstat (limited to 'misc/qefgcvt_r.c')
| -rw-r--r-- | misc/qefgcvt_r.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/misc/qefgcvt_r.c b/misc/qefgcvt_r.c index 012ab54acc..5ff8110e3b 100644 --- a/misc/qefgcvt_r.c +++ b/misc/qefgcvt_r.c @@ -18,10 +18,17 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <float.h> + #define FLOAT_TYPE long double #define FUNC_PREFIX q #define FLOAT_FMT_FLAG "L" #define FLOAT_NAME_EXT l -# define NDIGIT_MAX LDBL_DIG +#if LDBL_MANT_DIG == 64 +# define NDIGIT_MAX 21 +#else +/* See IEEE 854 5.6, table 2 for this formula. */ +# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * LDBL_MANT_DIG + 1.0))) +#endif #include "efgcvt_r.c" |