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v1_8_7_72 - Show latest stable - 1 note - Class: Fixnum

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<<(p1) public

Shifts fix left count positions (right if count is negative).

/*
 * call-seq:
 *   fix << count     => integer
 *
 * Shifts _fix_ left _count_ positions (right if _count_ is negative).
 */

static VALUE
rb_fix_lshift(x, y)
    VALUE x, y;
{
    long val, width;

    val = NUM2LONG(x);
    if (!FIXNUM_P(y))
        return rb_big_lshift(rb_int2big(val), y);
    width = FIX2LONG(y);
    if (width < 0)
        return fix_rshift(val, (unsigned long)-width);
    return fix_lshift(val, width);
}

September 21, 2008

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Better Description

This is really a bitshift left.

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Better Description