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ishr

integer arithmetic shift right

Jasmin Syntax

     ishr 

Stack

Before	After
value1	result
value2	...
...

Description

Pops two ints off the stack. Shifts value1 right by the amount indicated in the five low bits of value2. The int result is then pushed back onto the stack. value1 is shifted arithmetically (preserving the sign extension).

This is the same as computing the expression:

x / 2^s

^{where s is value1 and x is value2.}

Example

 ; This is like the Java code: ;      int x; ;      x >>= 3; ; iload_1          ; load local variable 1 onto stack iconst_3         ; push the integer 3 onto the stack ishr             ; arithmetic shift right istore_1         ; store the result in local variable 1 

Bytecode

Type	Description
u1	ishr opcode = 0x7A (122)

See Also

ishl, iushr, lshl, lshr, lushr, iand, land, ior, lor, ixor, lxor

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Java Virtual Machine, by Jon Meyer and Troy Downing, O'Reilly Associates