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fmt_fp.c: replace with public domain float format routine; ref #5448

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The original code can be found in `https://github.com/dhylands/format-float`.

Changes:
- support `double`
- support `#` (alt_form) modifier
- small refactoring
This commit is contained in:
Yukihiro "Matz" Matsumoto
2021-05-21 07:37:13 +09:00
parent fa29bb3bb4
commit 328563995f
2 changed files with 401 additions and 402 deletions
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include/mruby/numeric.h
+3 -2
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@@ -165,13 +165,14 @@ MRB_API mrb_float mrb_as_float(mrb_state *mrb, mrb_value x);
/* internal functions */
mrb_float mrb_div_float(mrb_float x, mrb_float y);
/* ArgumentError if format string doesn't match /%(\.[0-9]+)?[aAeEfFgG]/ */
mrb_value mrb_float_to_str(mrb_state *mrb, mrb_value x);
int mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_float f);
int mrb_format_float(mrb_float f, char *buf, size_t buf_size, char fmt, int prec, char sign);
/* obsolete functions; will be removed */
#define mrb_flo_to_fixnum(mrb, val) mrb_float_to_integer(mrb, val)
#define mrb_to_flo(mrb, x) mrb_as_float(mrb, x)
/* ArgumentError if format string doesn't match /%(\.[0-9]+)?[aAeEfFgG]/ */
int mrb_float_to_cstr(mrb_state *mrb, char *buf, size_t len, const char *fmt, mrb_float f);
#endif /* MRB_NO_FLOAT */