method

clamp

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clamp(p1, p2) public

Returns min if obj <=> min is less than zero, max if obj <=> max is greater than zero and obj otherwise.

12.clamp(0, 100)         #=> 12
523.clamp(0, 100)        #=> 100
-3.123.clamp(0, 100)     #=> 0

'd'.clamp('a', 'f')      #=> 'd'
'z'.clamp('a', 'f')      #=> 'f'

Show source

static VALUE
cmp_clamp(VALUE x, VALUE min, VALUE max)
{
    int c;

    if (cmpint(min, max) > 0) {
        rb_raise(rb_eArgError, "min argument must be smaller than max argument");
    }

    c = cmpint(x, min);
    if (c == 0) return x;
    if (c < 0) return min;
    c = cmpint(x, max);
    if (c > 0) return max;
    return x;
}

clamp

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