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Handle zero-like imaginary part as zero in to_r (#9581)

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Fixes [Bug #5179]
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Kenta Murata 2024-02-27 09:37:03 +09:00 • committed by GitHub
parent 89f0c0ceb5
commit 54a5b82944
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3 changed files with 45 additions and 6 deletions
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16
complex.c
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@ -1841,9 +1841,11 @@ nucomp_to_f(VALUE self)
*
* Complex.rect(1, 0).to_r # => (1/1)
* Complex.rect(1, Rational(0, 1)).to_r # => (1/1)
* Complex.rect(1, 0.0).to_r # => (1/1)
*
* Raises RangeError if <tt>self.imag</tt> is not exactly zero
* (either <tt>Integer(0)</tt> or <tt>Rational(0, _n_)</tt>).
* (either <tt>Integer(0)</tt> or <tt>Rational(0, _n_)</tt>)
* and <tt>self.imag.to_r</tt> is not exactly zero.
*
* Related: Complex#rationalize.
*/
@ -1852,9 +1854,15 @@ nucomp_to_r(VALUE self)
{
get_dat1(self);
if (!k_exact_zero_p(dat->imag)) {
rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Rational",
self);
if (RB_FLOAT_TYPE_P(dat->imag) && FLOAT_ZERO_P(dat->imag)) {
/* Do nothing here */
}
else if (!k_exact_zero_p(dat->imag)) {
VALUE imag = rb_check_convert_type_with_id(dat->imag, T_RATIONAL, "Rational", idTo_r);
if (NIL_P(imag) || !k_exact_zero_p(imag)) {
rb_raise(rb_eRangeError, "can't convert %"PRIsVALUE" into Rational",
self);
}
}
return f_to_r(dat->real);
}