118.

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lshl

long integer shift left

Jasmin Syntax

     lshl 

Stack

Before	After
value1	result-word1
value2-word1	result-word2
value2-word2	...
...

Description

Pops a long integer and an int from the stack. Shifts value2 (the long integer) left by the amount indicated in the low six bits of value1 (an int). The long integer result is then pushed back onto the stack.

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: ;      long x; ;      x <<= 3; ; lload_1          ; load long integer in local variable 1 onto stack iconst_3         ; push the integer 3 onto the stack lshl             ; shift left lstore_1         ; store the long result in local variable 1 

Bytecode

Type	Description
u1	lshl opcode = 0x79 (121)

See Also

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

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