use of math.h

[newport_j]

I am assuming that when you compile with icc you must use the icc equivalent include file. There seems to be onlyone that hasthe samename

math.h

now which should I use. The gcc one or the icc one? I would think that I should use the icc one.

Any help appreciated.

Newport_j

[TimP]

Simply use the normal
#include
and the normal path settings, so the compiler can choose.
There is an alternative if you care to try it.

[newport_j]

Can you replace math.h in the include file section with mathimf.h? Just a one for ome trade?

Also, which math.h file does icc use the icc version of the gcc version?

Newport_j

[TimP]

Yes, mathimf.h replaces math.h.
icc should search first for its own copies of standard include files such as , followed by using the path of the active g++, then possibly /usr/include/ and the like. If you make the preprocessed file, e.g. icc -E yourfile.c > yourfile.i, you should see specific paths where each section of inclusion was found.
Various linux distros have changed their interpretation on whether local directories and -I paths take precedence over system paths for include file search, so it doesn't hurt to check.

[TimP]

Yes, mathimf.h replaces math.h.
icc should search first for its own copies of standard include files such as , followed by using the path of the active g++, then possibly /usr/include/ and the like. If you make the preprocessed file, e.g. icc -E yourfile.c > yourfile.i, you should see specific paths where each section of inclusion was found.
Various linux distros have changed their interpretation on whether local directories and -I paths take precedence over system paths for include file search, so it doesn't hurt to check.