Re: How does the SDK selection affect my compiler settings?
Re: How does the SDK selection affect my compiler settings?
- Subject: Re: How does the SDK selection affect my compiler settings?
- From: Wesley Smith <email@hidden>
- Date: Sat, 21 May 2005 09:20:24 -0700
Hi,
I'm trying to compile a test program to see about the isnan function
on my system (apple darwin w/ gcc version 3.3 20030304 (Apple
Computer, Inc. build 1671). Here's the code:
#include <cmath>
int main()
{
float x=sqrt(-1);
return isnan(x);
}
Here's the output:
gcc -o main main.cpp
main.cpp: In function `int main()':
main.cpp:5: error: `isnan' undeclared (first use this function)
main.cpp:5: error: (Each undeclared identifier is reported only once for each
function it appears in.)
This is baffling since cmath is included and it redifines the macros
which it includes from math.h. I completely stumped here and would
appreciate any help.
thanks,
wes
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