diff options
author | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 1999-04-26 09:42:44 +0000 |
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committer | matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 1999-04-26 09:42:44 +0000 |
commit | e67e5adf4e33b79c3bc2f2c8a8b4a790a88adcf2 (patch) | |
tree | 6ef7eae93ed8a768a02dee1baa8ba80a4425b5e0 /sprintf.c | |
parent | f6e04e38cd1f121111d388865e8b201ea3402452 (diff) |
aix shlib link
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_3@444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'sprintf.c')
-rw-r--r-- | sprintf.c | 17 |
1 files changed, 16 insertions, 1 deletions
@@ -12,6 +12,9 @@ #include "ruby.h" #include <ctype.h> +#include <math.h> + +#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */ #ifndef atof double strtod(); @@ -562,6 +565,7 @@ rb_f_sprintf(argc, argv) { VALUE val = GETARG(); double fval; + int i, need = 6; char fbuf[32]; switch (TYPE(val)) { @@ -583,8 +587,19 @@ rb_f_sprintf(argc, argv) } fmt_setup(fbuf, *p, flags, width, prec); + need = 0; + if (*p != 'e' && *p != 'E') { + i = INT_MIN; + frexp(fval, &i); + if (i > 0) + need = BIT_DIGITS(i); + } + need += (flags&FPREC) ? prec : 6; + if ((flags&FWIDTH) && need < width) + need = width; + need += 20; - CHECK(22); + CHECK(need); sprintf(&buf[blen], fbuf, fval); blen += strlen(&buf[blen]); } |