PETSc version 3.16.5
Fix/Edit manual page

# PetscBLASIntCast

casts a PetscInt (which may be 64 bits in size) to a PetscBLASInt (which may be 32 bits in size), generates an error if the PetscBLASInt is not large enough to hold the number.

### Synopsis

    PETSC_STATIC_INLINE PetscErrorCode PetscBLASIntCast(PetscInt a,PetscBLASInt *b)

Not Collective

### Input Parameter

| a | - the PetscInt value

### Output Parameter

| b | - the resulting PetscBLASInt value

### Notes

Not available from Fortran Errors if the integer is negative since PETSc calls to BLAS/LAPACK never need to cast negative integer inputs

### See Also

PetscBLASInt, PetscMPIInt, PetscInt, PetscMPIIntCast(), PetscIntCast()

### Level

advanced

### Location

include/petscsys.h

### Examples

src/ts/tutorials/ex50.c.html
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages