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: Chris Espinosa <email@hidden>
- Date: Sat, 21 May 2005 09:52:38 -0700
On May 21, 2005, at 9:20 AM, Wesley Smith wrote: 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.)
It's declared in the std:: namespace.
#include <cmath> int main() { float x=sqrt(-1); return std::isnan(x); }
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