Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report
Current view: top level - kernel/none - halfgcd.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30640-c2c58e18c5) Lines: 215 219 98.2 %
Date: 2026-01-27 08:51:18 Functions: 20 20 100.0 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
FIXUP0 121844
FIXUP1 180336
HGCD 14792830
HGCD0 28671069
HGCD_basecase 14674194
HGCD_split 118918
ZM2_mul 6878304
ZM2_sqr 2338
ZM_inv2 5921204
halfgcdii 5922691
isint2n 22786442
lastq 1323
magic_threshold 22724910
matid2 747
mulT 7549
mulq 3034428
mulqab 69
mulqi 1323
signdet 6101407
uexpi 22786707

Generated by: LCOV version 1.16