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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30571-c0dfe82732) Lines: 913 954 95.7 % Date: 2025-12-09 09:22:05 Functions: 61 64 95.3 % Legend: Lines: hit not hit

Function Name	Hit count
BD	2359
BD_deg1	0
BD_odd	406
Beauzamy_bound	61300
DDF_roots	1876666
LLL_check_progress	1547
LLL_cmbf	126
Mignotte_bound	61300
QX_factor	805
QX_gcd	19210
QXk_gcd	189
Rg_is_QXk	0
ZX_DDF	153557
ZX_DDF_max	206680
ZX_divides	6559203
ZX_divides_i	6588603
ZX_factor	50764
ZX_factor_i	51569
ZX_gcd	10624833
ZX_gcd_Flx	3371107
ZX_gcd_all	14468404
ZX_gcd_chinese	117575
ZX_gcd_filter	123729
ZX_gcd_slice	3359461
ZX_gcd_worker	3359461
ZX_is_irred	102675
ZX_is_squarefree	198795
ZX_radical	3168017
ZX_squff	333838
ZXkX_ZXk_divexact	2528117
ZXkX_ZXk_divexact_s	2571356
ZXkX_ZXk_divides_s	3264990
ZXk_center2n	4910922
ZXk_content_shallow	3445416
ZXk_divexact	0
ZXk_divexact_i	2529297
ZXk_divexact_s	7584530
ZXk_divides	6218618
ZXk_divides_i	2789715
ZXk_divides_s	10123525
ZXk_gcd	1686070
ZXk_gcd_i	8689753
ZXk_renormalize	4961365
_gcd	19399
centeri2n	3214547
chk_factors	140
chk_factors_get	350
cmbf	50806
cmbf_precs	50806
combine_factors	50806
dividesii	3481592
fact_from_DDF	51562
factor_bound	61300
invphi	19622
myconcat	2310
next2pow	14
nfrootsQ	1876670
pick_prime	2083345
polcyclofactors	315
poliscyclo	99213
poliscycloprod	1029
rec	1714462
root_bound	111092
shifteval	184918

Generated by: LCOV version 1.16