ishl

ishl

Forms
ishl = 120 (0x78)

Stack
..., value1, value2 ..., result

Description
Both value1 and value2 must be of type int. The values are popped from the operand stack. An int result is calculated by shifting value1 left by s bit positions, where s is the value of the low five bits of value2. The result is pushed onto the operand stack.

Notes
This is equivalent (even if overflow occurs) to multiplication by 2 to the power s. The shift distance actually used is always in the range 0 to 31, inclusive, as if value2 were subjected to a bitwise logical AND with the mask value 0x1f.

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Java Virtual Machine Specification (HTML generated by dkramer on February 25, 1997)
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