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performance [2019/08/05 11:47] – [Tip #8 REPEAT ... UNTIL is faster than FOR ... NEXT] neils | performance [2019/09/03 08:55] – [Tip #9: Know the optimizer] neils | ||
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until i! = 100 | until i! = 100 | ||
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- | ==== Tip #9: Know the optimizer ==== | + | ==== Tip #9: Use LSHIFT() and RSHIFT() ==== |
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+ | It's much faster to multiply or divide by powers of two using bit shifting operations. Use [[lshift|LSHIFT()]] and [[rshift|RSHIFT()]] whenever you can. | ||
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+ | ==== Tip #10: Know the optimizer ==== | ||
**XC=BASIC** features a built-in optimizer that replaces commonly used program sequences with faster opcode sequences. To make good use of the optimizer, bear in mind the following program structures that can be optimized: | **XC=BASIC** features a built-in optimizer that replaces commonly used program sequences with faster opcode sequences. To make good use of the optimizer, bear in mind the following program structures that can be optimized: |