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 - gcdll.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 99.4 % 340 338
Test Date: 2026-10-07 17:02:40 Functions: 100.0 % 14 14
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
clcm 37402
rgcduu 38025
cbezout 704124
ulcm 3160643
lgcdii 31133839
cgcd 31566145
xxgcduu 135120303
gcduodd 309032761
ugcd 375088655
mygcduodd 405338239
Fl_inv 495135593
Fl_invsafe 509515123
xgcduu 532808580
igcduu 586916139

Generated by: LCOV version 2.0-1