PetscScalar#

PETSc type that represents either a double precision real number, a double precision complex number, a single precision real number, a __float128 real or complex or a __fp16 real - if the code is configured with –with-scalar-type=real,complex –with-precision=single,double,__float128,__fp16

Notes#

For MPI calls that require datatypes, use MPIU_SCALAR as the datatype for PetscScalar and MPIU_SUM, etc for operations. They will automatically work correctly regardless of the size of PetscScalar.

See Also#

PetscReal, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX, MPIU_INT, PetscRealPart(), PetscImaginaryPart()

Level#

beginner

Location#

include/petscsystypes.h

Examples#

src/vec/vec/tutorials/ex10.c.html
src/vec/vec/tutorials/ex11f90.F90.html
src/vec/vec/tutorials/ex12f.F90.html
src/vec/vec/tutorials/ex15.c.html
src/vec/vec/tutorials/ex18.c.html
src/vec/vec/tutorials/ex18f.F90.html
src/vec/vec/tutorials/ex1f.F90.html
src/vec/vec/tutorials/ex44.c.html
src/vec/vec/tutorials/ex4f90.F90.html
src/vec/vec/tutorials/ex5.c.html
src/vec/vec/tutorials/ex6f.F90.html


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