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author | tadf <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-10 00:18:52 +0000 |
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committer | tadf <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-03-10 00:18:52 +0000 |
commit | ec9eabc6c2df764c2c51e72e23bb7512bb77d965 (patch) | |
tree | b1c5fd04d75d47732d1fcbd0702080d65d32fbbf /complex.c | |
parent | b3265c0ed6d7a2db76c172aef128445902c36c63 (diff) | |
download | ruby-ec9eabc6c2df764c2c51e72e23bb7512bb77d965.tar.gz |
* complex.c: described syntax of string form.
* rational.c: ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'complex.c')
-rw-r--r-- | complex.c | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -483,6 +483,24 @@ f_complex_new2(VALUE klass, VALUE x, VALUE y) * * Complex(1, 2) #=> (1+2i) * Complex('1+2i') #=> (1+2i) + * + * Syntax of string form: + * + * complex = real part | [ sign ] , imaginary part + * | real part , sign , imaginary part + * | rational , "@" , rational ; + * real part = rational ; + * imaginary part = imaginary unit | unsigned rational , imaginary unit ; + * 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 ] ; + * imaginary unit = "i" | "I" | "j" | "J" ; + * sign = "-" | "+" ; + * digits = digit , [ { digit | "_" , digit } ] ; + * digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ; */ static VALUE nucomp_f_complex(int argc, VALUE *argv, VALUE klass) |