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 30660-09c6d0ed2e) Lines: 215 219 98.2 %
Date: 2026-02-01 09:23:44 Functions: 20 20 100.0 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
FIXUP0 134864
FIXUP1 195318
HGCD 15110823
HGCD0 29273625
HGCD_basecase 14983566
HGCD_split 127414
ZM2_mul 7488446
ZM2_sqr 2338
ZM_inv2 6178472
halfgcdii 6179813
isint2n 23161111
lastq 1455
magic_threshold 23092770
matid2 957
mulT 8092
mulq 3064760
mulqab 74
mulqi 1455
signdet 6373714
uexpi 23161278

Generated by: LCOV version 1.16