[arieljeds]

Hi everyone! Ok very simple question here but oddly I can't find an answer that works!

I am using codeStream in my blockMeshDict file and one of the things I'm trying to calculate involves multiplying by pi...oddly though, I can't seem to use pi correctly. (I have left in #calc and $r1 in the examples just to demonstrate the sort of thing I have in my blockMeshDict)

I have so far tried:

#calc pi*$r1
#calc \pi*$r1
#calc Pi*$r1
#calc mathematicalConstant::pi*$r1

Apologies for what is probably a stupid question!

[alexeym]

Hi,

And why not:

constant::mathematical::pi

?

Though for example

degToRad(180)

would be shorter

Also here is excerpt from $FOAM_SRC/OpenFOAM/global/constants/mathematical/mathematicalConstants.H (just for reference)

namespace Foam
{
namespace constant
{
namespace mathematical
{
...
    const scalar pi(M_PI);
    const scalar twoPi(2*pi);
    const scalar piByTwo(0.5*pi);
...
} // End namespace mathematical
} // End namespace constant
} // End namespace Foam

[MamboJambo]

Other stuff like, should work too:

M_PI_2        /* pi/2 */
M_PI_4        /* pi/4 */
M_1_PI        /* 1/pi */
M_2_PI        /* 2/pi */
M_2_SQRTPI    /* 2/sqrt(pi) */

Any particular reason to group some variables inside a particular namespace? Wouldn't it be better to just use the standard stuff in the math.h ?