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 30316-0578a48613) Lines: 913 954 95.7 % Date: 2025-06-04 09:19:51 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	791
poliscycloprod	1029
LLL_check_progress	1547
myconcat	2310
BD	2359
QX_gcd	18622
_gcd	18812
invphi	19622
ZX_factor	49574
cmbf	49770
cmbf_precs	49770
combine_factors	49770
fact_from_DDF	50358
ZX_factor_i	50365
Beauzamy_bound	60257
Mignotte_bound	60257
factor_bound	60257
poliscyclo	98977
ZX_is_irred	102241
root_bound	110007
ZX_gcd_chinese	115244
ZX_gcd_filter	121398
ZX_DDF	151912
shifteval	183452
ZX_is_squarefree	197731
ZX_DDF_max	203789
ZX_squff	332515
DDF_roots	1622105
nfrootsQ	1622108
ZXk_gcd	1686063
rec	1714455
pick_prime	1825893
ZXkX_ZXk_divexact	2528103
ZXk_divexact_i	2529297
ZXkX_ZXk_divexact_s	2571335
ZX_radical	2661243
ZXk_divides_i	2789715
centeri2n	3214540
ZXkX_ZXk_divides_s	3264969
ZX_gcd_slice	3354181
ZX_gcd_worker	3354181
ZX_gcd_Flx	3365828
ZXk_content_shallow	3445402
dividesii	3481571
ZXk_center2n	4910915
ZXk_renormalize	4961344
ZXk_divides	6218604
ZX_divides	6553183
ZX_divides_i	6581953
ZXk_divexact_s	7584467
ZXk_gcd_i	8689704
ZXk_divides_s	10123448
ZX_gcd	10623077
ZX_gcd_all	13957220

Generated by: LCOV version 1.16