method

pred

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

1_8_6_287
1_8_7_72 (0)
1_8_7_330 (0)
1_9_1_378 (-27)
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2_1_10 (-17)
2_2_9 (0)
2_4_6 (0)
2_5_5 (38)
2_6_3 (0)
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pred() public

Returns the Integer equal to int - 1.

1.pred      #=> 0
(-1).pred   #=> -2

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/*
 *  call-seq:
 *     int.pred    => integer
 *
 *  Returns the <code>Integer</code> equal to <i>int</i> - 1.
 *
 *     1.pred      #=> 0
 *     (-1).pred   #=> -2
 */

static VALUE
int_pred(VALUE num)
{
    if (FIXNUM_P(num)) {
        long i = FIX2LONG(num) - 1;
        return LONG2NUM(i);
    }
    return rb_funcall(num, '-', 1, INT2FIX(1));
}

pred

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