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 30347-cb65b7994e) Lines: 913 954 95.7 % Date: 2025-06-27 09:22:08 Functions: 61 64 95.3 % Legend: Lines: hit not hit

Function Name	Hit count
BD_deg1	0
Rg_is_QXk	0
ZXk_divexact	0
next2pow	14
LLL_cmbf	126
chk_factors	140
QXk_gcd	189
polcyclofactors	315
chk_factors_get	350
BD_odd	406
QX_factor	805
poliscycloprod	1029
LLL_check_progress	1547
myconcat	2310
BD	2359
QX_gcd	18846
_gcd	19035
invphi	19622
ZX_factor	50757
cmbf	50785
cmbf_precs	50785
combine_factors	50785
fact_from_DDF	51555
ZX_factor_i	51562
Beauzamy_bound	61278
Mignotte_bound	61278
factor_bound	61278
poliscyclo	99199
ZX_is_irred	102641
root_bound	111029
ZX_gcd_chinese	117423
ZX_gcd_filter	123577
ZX_DDF	153509
shifteval	184820
ZX_is_squarefree	198732
ZX_DDF_max	206606
ZX_squff	333726
ZXk_gcd	1686063
rec	1714455
DDF_roots	1876460
nfrootsQ	1876466
pick_prime	2083064
ZXkX_ZXk_divexact	2528103
ZXk_divexact_i	2529297
ZXkX_ZXk_divexact_s	2571335
ZXk_divides_i	2789715
ZX_radical	3167672
centeri2n	3214540
ZXkX_ZXk_divides_s	3264969
ZX_gcd_slice	3359031
ZX_gcd_worker	3359031
ZX_gcd_Flx	3370677
ZXk_content_shallow	3445402
dividesii	3481571
ZXk_center2n	4910915
ZXk_renormalize	4961344
ZXk_divides	6218604
ZX_divides	6558551
ZX_divides_i	6587951
ZXk_divexact_s	7584467
ZXk_gcd_i	8689704
ZXk_divides_s	10123448
ZX_gcd	10624329
ZX_gcd_all	14467313

Generated by: LCOV version 1.16