I am a newbie to blitz.

I had succeeded in compiling blitz src, blitz-0.8, and obtained the

library file, blitz.lib under VC++.net 2003 standard on winxp. Then I downloaded the example

program named rangexpr.cpp from homepage of blitz++ for test but errors occurred,

error : M_PI not define.

error C2679: binary operator ‘*’ …

on the line in the program as below,

Vector<float> x=cos(Range(0,7)*(2.0 * M_PI / 8);

Where is M_PI defined?

I make sure that searching path of header files of blitz is included by following step:

 Tools->option->Projects->C/C++ directory-> include file and move it to

the top.

Even I copy the library to the directory of the project I created in VC++.net 2003

and use #pragma comment(lib,”blitz.lib”), the problem could not be solved.

Could anybody give me a clue?

THX a million!