method

asin

v1_8_7_72 - Show latest stable - 0 notes - Class: Math

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asin(p1) public

Computes the arc sine of x. Returns -{PI/2} .. {PI/2}.

/*
 *  call-seq:
 *     Math.asin(x)    => float
 *  
 *  Computes the arc sine of <i>x</i>. Returns -{PI/2} .. {PI/2}.
 */

static VALUE
math_asin(obj, x)
    VALUE obj, x;
{
    double d;

    Need_Float(x);
    errno = 0;
    d = asin(RFLOAT(x)->value);
    domain_check(d, "asin");
    return rb_float_new(d);
}

asin

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