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[ruby/bigdecimal] [Doc] Add documentation of BigDecimal#n_significant_digits

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https://github.com/ruby/bigdecimal/commit/ceaf16b03e
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Kenta Murata 2021-12-02 17:03:33 +09:00
parent aca96f7ec7
commit ea713009ba
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16
ext/bigdecimal/bigdecimal.c
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@ -481,6 +481,22 @@ BigDecimal_scale(VALUE self)
return SSIZET2NUM(scale); return SSIZET2NUM(scale);
} }
/*
* call-seq:
* n_significant_digits -> integer
*
* Returns the number of decimal significant digits in +self+.
*
* BigDecimal("0").scale # => 0
* BigDecimal("1").scale # => 1
* BigDecimal("1.1").scale # => 2
* BigDecimal("3.1415").scale # => 5
* BigDecimal("-1e20").precision # => 1
* BigDecimal("1e-20").precision # => 1
* BigDecimal("Infinity").scale # => 0
* BigDecimal("-Infinity").scale # => 0
* BigDecimal("NaN").scale # => 0
*/
static VALUE static VALUE
BigDecimal_n_significant_digits(VALUE self) BigDecimal_n_significant_digits(VALUE self)
{ {