---
name: "posv_comp_grp"
section: "3"
platform: "linux"
package: "lapack-doc"
version: "3.12.1-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/posv_comp_grp"
---

# posv\_comp\_grp(3)

Cholesky: computational routines (factor, cond, etc.)

## NAME

posv\_comp\_grp - Cholesky: computational routines (factor, cond, etc.)

## SYNOPSIS

### Topics

**— full —**\
 **pocon:          condition number estimate**\
 **potrf:          triangular factor**\
 **potrf2:         triangular factor panel, recursive?**\
 **potf2:          triangular factor panel, level 2**\
 **pstrf:          triangular factor, with pivoting**\
 **pstf2:          triangular factor, with pivoting panel, level 2**\
 **potrs:          triangular solve using factor**\
 **potri:          triangular inverse**\
 **porfs:          iterative refinement**\
 **porfsx:         iterative refinement, expert**\
 **poequ:          equilibration**\
 **poequb:         equilibration, power of 2**\
 **laqhe:          row/col scale matrix**\
 **la\_porcond:     Skeel condition number estimate**\
 **la\_porpvgrw:    reciprocal pivot growth**\
 **la\_porfsx\_extended:  step in porfsx**\
 **— packed —**\
 **ppcon:          condition number estimate**\
 **pptrf:          triangular factor**\
 **pptrs:          triangular solve using factor**\
 **pptri:          triangular inverse**\
 **pprfs:          iterative refinement**\
 **ppequ:          equilibration**\
 **laqhp:          row/col scale matrix**\
 **— rectangular full packed (RFP) —**\
 **pftrf:          triangular factor**\
 **pftrs:          triangular solve using factor**\
 **pftri:          triangular inverse**\
 **— banded —**\
 **pbcon:          condition number estimate**\
 **pbtrf:          triangular factor**\
 **pbtf2:          triangular factor panel, level 2**\
 **pbtrs:          triangular solve using factor**\
 **pbrfs:          iterative refinement**\
 **pbequ:          equilibration**\
 **laqhb:          row/col scale matrix**\
 **— tridiagonal —**\
 **ptcon:          condition number estimate**\
 **pttrf:          triangular factor**\
 **pttrs:          triangular solve using factor**\
 **ptts2:          triangular solve using factor, unblocked**\
 **ptrfs:          iterative refinement**\

## Detailed Description

## Author

Generated automatically by Doxygen for LAPACK from the source code.