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rational.c: canonicalization case

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* rational.c (float_numerator, float_denominator): fix for
  canonicalization case where `Float#to_r` could return an Integer
  not a Rational.  although mathn.rb has been removed in the
  trunk, fix for the backport purpose.
  [ruby-core:80942] [Bug #13528]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-05-01 00:32:56 +00:00
parent 55e99ef5eb
commit fbb38d6d6a
1 changed files with 12 additions and 2 deletions
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14
rational.c
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@ -2073,9 +2073,14 @@ static VALUE
float_numerator(VALUE self) float_numerator(VALUE self)
{ {
double d = RFLOAT_VALUE(self); double d = RFLOAT_VALUE(self);
VALUE r;
if (isinf(d) || isnan(d)) if (isinf(d) || isnan(d))
return self; return self;
return nurat_numerator(float_to_r(self)); r = float_to_r(self);
if (canonicalization && k_integer_p(r)) {
return r;
}
return nurat_numerator(r);
} }
/* /*
@ -2091,9 +2096,14 @@ static VALUE
float_denominator(VALUE self) float_denominator(VALUE self)
{ {
double d = RFLOAT_VALUE(self); double d = RFLOAT_VALUE(self);
VALUE r;
if (isinf(d) || isnan(d)) if (isinf(d) || isnan(d))
return INT2FIX(1); return INT2FIX(1);
return nurat_denominator(float_to_r(self)); r = float_to_r(self);
if (canonicalization && k_integer_p(r)) {
return ONE;
}
return nurat_denominator(r);
} }
/* /*