PetscInfo

Logs informative data, which is printed to standard output or a file when the option -info <file> is specified.

#include "petsc.h"   
PetscErrorCode  PetscInfo_Private(const char func[],void *vobj, const char message[], ...)

Collective over PetscObject argument

PetscErrorCode PetscInfo(void *vobj, const char message[], ...))

	vobj	- object most closely associated with the logging statement
	message	- logging message, using standard "printf" format

   -info : activates printing of PetscInfo() messages

Note: Since this is a macro you must wrap the arguments in TWO sets of (())

Fortran Note: This routine is not supported in Fortran.

    Mat A

    double alpha

    PetscInfo1(A,"Matrix uses parameter alpha=%g\n",alpha);