method

*

v1_8_7_330 - Show latest stable - 0 notes - Class: Fixnum

*(p1) public

Performs multiplication: the class of the resulting object depends on the class of numeric and on the magnitude of the result.

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/*
 * call-seq:
 *   fix * numeric   =>  numeric_result
 *
 * Performs multiplication: the class of the resulting object depends on
 * the class of <code>numeric</code> and on the magnitude of the
 * result.
 */

static VALUE
fix_mul(x, y)
    VALUE x, y;
{
    if (FIXNUM_P(y)) {
#ifdef __HP_cc
        /* avoids an optimization bug of HP aC++/ANSI C B3910B A.06.05 [Jul 25 2005] */
        volatile
#endif
        long a, b, c;
        VALUE r;

        a = FIX2LONG(x);
        if (a == 0) return x;

        b = FIX2LONG(y);
        c = a * b;
        r = LONG2FIX(c);

        if (FIX2LONG(r) != c || c/a != b) {
            r = rb_big_mul(rb_int2big(a), rb_int2big(b));
        }
        return r;
    }
    if (TYPE(y) == T_FLOAT) {
        return rb_float_new((double)FIX2LONG(x) * RFLOAT(y)->value);
    }
    return rb_num_coerce_bin(x, y);
}

*

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