Meaning of this for-loop written ina mex file

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Kasun Talwatta
Kasun Talwatta 2011-10-13
Hi,
Can someone please shed some light about this particular for-loop that I came across.
for(ir = ir; ir<=temp; ir++){ }
The initial value seems to equal to each other !. What is the meaning of that ?

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Jan
Jan 2011-10-13
It is simply a bad programming style. The "ir = ir" can be omitted:
for( ; ir <= temp; ir++) { }

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Kasun Talwatta
Kasun Talwatta 2011-10-13
I found that it basically does ir = max(ir, ceil(temp)) thanks to a member from stackoverflow
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James Tursa
James Tursa 2011-10-13
Or an infinite loop. E.g. if ir is unsigned and temp is the max value (or greater) for that unsigned type, or if ir is a signed integer type and the compiler uses modulo arithmetic for signed integer overflows and temp is the max value (or greater) for that type, etc. etc.

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