PETSc version 3.17.4
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# PetscDTFactorialInt

Compute n! as an integer

### Input Parameter

| n | - a non-negative integer

### Output Parameter

| factorial | - n!

Note: this is limited to n such that n! can be represented by PetscInt, which is 12 if PetscInt is a signed 32-bit integer and 20 if PetscInt is a signed 64-bit integer.

### Level

beginner

### Location

src/dm/dt/fe/../../../../include/petscdt.h
Index of all FE routines
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