[petsc-users] using petsc functions in structs?

Wed, 12 May 2010 15:54:42 -0400 

Hi, I'm fighting this issue.

In the follow code which is macro for a struct divide I get three errors about 
casting PetscErrorCode types into the name of the struct.

This is the code
struct IMPACT_Moment Divide(struct IMPACT_Moment * M1, struct IMPACT_Moment * 
M3)
{  // does M1./M3 and returns M2
  PetscErrorCode ierr;
  struct IMPACT_Moment M2;
  M2.Nx = M1->Nx;
  M2.Ny = M1->Ny;
  M2.coords[0] = M1->coords[0];
  M2.coords[1] = M1->coords[1];

78:  ierr = VecCopy(M1->xaxis, M2.xaxis);CHKERRQ(ierr);
79:  ierr = VecCopy(M1->yaxis, M2.yaxis);CHKERRQ(ierr);

81:  ierr = MatCopy(M1->values, M2.values, 
DIFFERENT_NONZERO_PATTERN);CHKERRQ(ierr);
...... goes on


and these are the only three error messages I get

IMPACTA_Moments.h: In function ?IMPACT_Moment Divide(IMPACT_Moment*, 
IMPACT_Moment*)?:
IMPACTA_Moments.h:78: error: conversion from ?PetscErrorCode? to non-scalar 
type ?IMPACT_Moment? requested
IMPACTA_Moments.h:79: error: conversion from ?PetscErrorCode? to non-scalar 
type ?IMPACT_Moment? requested
IMPACTA_Moments.h:81: error: conversion from ?PetscErrorCode? to non-scalar 
type ?IMPACT_Moment? requested


Any thoughts?

JM
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