Re: why use pow(x, 2)?
Re: why use pow(x, 2)?
- Subject: Re: why use pow(x, 2)?
- From: Jens Alfke <email@hidden>
- Date: Mon, 2 Nov 2009 11:07:25 -0800
On Nov 2, 2009, at 11:01 AM, Chunk 1978 wrote:
why use this:
float dist = pow(red - r, 2) + pow(green - g, 2) + pow(blue - b, 2);
instead of:
float dist = ((red - r) * 2) + ((green - g) * 2) + ((blue - b) * 2);
Um, "*" is multiplication, not exponentiation. Maybe you're thinking
of the "**" operator found in some languages, though not in C :)
—Jens_______________________________________________
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