**petsc-master 2020-01-17**

# PetscDTFactorialInt

Compute n! as an integer
### Input Arguments

**n ** -a non-negative integer

### Output Arguments

**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/space/../../../../include/petscdt.h

Index of all SPACE routines

Table of Contents for all manual pages

Index of all manual pages