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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 - basemath - QX_factor.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 95.9 % 952 913 Test Date: 2026-07-22 22:45:42 Functions: 95.3 % 64 61 Legend: Lines:     hit not hit

Function Name	Hit count
BD_deg1	0
Rg_is_QXk	0
ZXk_divexact	0
next2pow	14
chk_factors	140
LLL_cmbf	147
QXk_gcd	189
polcyclofactors	322
chk_factors_get	350
BD_odd	420
QX_factor	805
poliscycloprod	1029
LLL_check_progress	1694
myconcat	2317
BD	2366
QX_gcd	19369
_gcd	19558
invphi	19655
ZX_factor	38757
fact_from_DDF	39555
ZX_factor_i	39562
cmbf	51730
cmbf_precs	51730
combine_factors	51730
Beauzamy_bound	62421
Mignotte_bound	62421
factor_bound	62421
poliscyclo	99213
ZX_is_irred	103069
root_bound	112919
ZX_gcd_chinese	116603
ZX_gcd_filter	122808
ZX_DDF	155281
shifteval	186379
ZX_is_squarefree	199443
ZX_DDF_max	210246
ZX_squff	322307
ZXk_gcd	1686049
rec	1714007
DDF_roots	1878324
nfrootsQ	1878328
pick_prime	2088568
ZXkX_ZXk_divexact	2527823
ZXk_divexact_i	2529108
ZXkX_ZXk_divexact_s	2570537
ZXk_divides_i	2789701
ZX_radical	3170174
centeri2n	3214092
ZXkX_ZXk_divides_s	3262477
ZX_gcd_slice	3356783
ZX_gcd_worker	3356783
ZX_gcd_Flx	3368485
ZXk_content_shallow	3444534
dividesii	3479688
ZXk_center2n	4909872
ZXk_renormalize	4958257
ZXk_divides	6217701
ZX_divides	6557258
ZX_divides_i	6587891
ZXk_divexact_s	7582948
ZXk_gcd_i	8688143
ZXk_divides_s	10118541
ZX_gcd	10623691
ZX_gcd_all	14446251

Generated by: LCOV version 2.0-1