diff options
Diffstat (limited to 'rational.c')
-rw-r--r-- | rational.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/rational.c b/rational.c index a78b3202ec..e009ff2314 100644 --- a/rational.c +++ b/rational.c @@ -571,6 +571,22 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y) * * Rational(1, 2) #=> (1/2) * Rational('1/2') #=> (1/2) + * + * Syntax of string form: + * + * string form = extra spaces , rational , extra spaces ; + * rational = [ sign ] , unsigned rational ; + * unsigned rational = numerator | numerator , "/" , denominator ; + * numerator = integer part | fractional part | integer part , fractional part ; + * denominator = digits ; + * integer part = digits ; + * fractional part = "." , digits , [ ( "e" | "E" ) , [ sign ] , digits ] ; + * sign = "-" | "+" ; + * digits = digit , { digit | "_" , digit } ; + * digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ; + * extra spaces = ? \s* ? ; + * + * See String#to_r. */ static VALUE nurat_f_rational(int argc, VALUE *argv, VALUE klass) @@ -2256,6 +2272,8 @@ string_to_r_strict(VALUE self) * '21 june 09'.to_r #=> (21/1) * '21/06/09'.to_r #=> (7/2) * 'bwv 1079'.to_r #=> (0/1) + * + * See Kernel.Rational. */ static VALUE string_to_r(VALUE self) |