From b113c12c350c29a0f7f06fba12f06d86e79de1f4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 28 Jul 1999 22:39:04 +0000 Subject: Update. 1999-07-28 Ulrich Drepper * misc/efgcvt.c: Use IEEE 854 formula to compute the number of digits to print. * misc/efgcvt_r.c: Likewise. * misc/qefgcvt.c: Likewise. * misc/qefgcvt_r.c: Likewise. * misc/tst-efgcvt.c: Remove one test which cannot reliably be run anymore. --- misc/efgcvt_r.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'misc/efgcvt_r.c') diff --git a/misc/efgcvt_r.c b/misc/efgcvt_r.c index 944fe4cc98..d73fd22f70 100644 --- a/misc/efgcvt_r.c +++ b/misc/efgcvt_r.c @@ -30,7 +30,12 @@ # define FUNC_PREFIX # define FLOAT_FMT_FLAG # define FLOAT_NAME_EXT -# define NDIGIT_MAX DBL_DIG +# if DBL_MANT_DIG == 53 +# define NDIGIT_MAX 17 +# else +/* See IEEE 854 5.6, table 2 for this formula. */ +# define NDIGIT_MAX (lrint (ceil (M_LN2 / M_LN10 * DBL_MANT_DIG + 1.0))) +# endif #endif #define APPEND(a, b) APPEND2 (a, b) -- cgit v1.2.3