method

erf

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erf(p1) public

Calculates the error function of x.

/*
 * call-seq:
 *    Math.erf(x)  => float
 *
 *  Calculates the error function of x.
 */

static VALUE
math_erf(obj, x)
    VALUE obj, x;
{
    Need_Float(x);
    return rb_float_new(erf(RFLOAT(x)->value));
}

erf

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