Method: Float#finite?

Defined in:
numeric.c

#finite? ⇒ Boolean

Returns true if self is not Infinity, -Infinity, or NaN, false otherwise:

f = 2.0      # => 2.0
f.finite?    # => true
f = 1.0/0.0  # => Infinity
f.finite?    # => false
f = -1.0/0.0 # => -Infinity
f.finite?    # => false
f = 0.0/0.0  # => NaN
f.finite?    # => false

Returns:

  • (Boolean) 

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# File 'numeric.c', line 1992

VALUE
rb_flo_is_finite_p(VALUE num)
{
    double value = RFLOAT_VALUE(num);

    return RBOOL(isfinite(value));
}