RE: Integers, Modulus
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- Subject: RE: Integers, Modulus
- From: John Mckenna <jmckenna@...>
- Date: 2001年12月19日 14:44:02 -0000
>From: chbarr [mailto:chbarr@rocketmail.com]
>First, I wanted to get a modulus (remainder) of two numbers. I looked
>in the Lua Reference manual and Programming Lua, and no luck.
>So, I thought that, with some effort, I could work around that.
>However, I could not find how to take just the integer part of a
>floating number (i.e. the part to the left of the decimal point).
You have floor() and ceil(). They can be used to do any integerising you
need.
I can never remember how mod is supposed to work when negative numbers are
involved, so this might only work for positive numbers (that's all I ever
use mod for anyway):
result = a - b*floor(a/b)
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