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 30748-2ce22a5f1f) Lines: 912 954 95.6 % Date: 2026-03-18 09:25:54 Functions: 61 64 95.3 % Legend: Lines: hit not hit

Function Name	Hit count
BD	2359
BD_deg1	0
BD_odd	406
Beauzamy_bound	61278
DDF_roots	1876644
LLL_check_progress	1547
LLL_cmbf	126
Mignotte_bound	61278
QX_factor	805
QX_gcd	19226
QXk_gcd	189
Rg_is_QXk	0
ZX_DDF	153350
ZX_DDF_max	206233
ZX_divides	6558741
ZX_divides_i	6588247
ZX_factor	37324
ZX_factor_i	38129
ZX_gcd	9558069
ZX_gcd_Flx	3370659
ZX_gcd_all	13375262
ZX_gcd_chinese	117358
ZX_gcd_filter	123513
ZX_gcd_slice	3359012
ZX_gcd_worker	3359012
ZX_is_irred	102571
ZX_is_squarefree	198446
ZX_radical	3167781
ZX_squff	320748
ZXkX_ZXk_divexact	2499495
ZXkX_ZXk_divexact_s	2515187
ZXkX_ZXk_divides_s	3163143
ZXk_center2n	4782462
ZXk_content_shallow	3341393
ZXk_divexact	0
ZXk_divexact_i	2523620
ZXk_divexact_s	7517211
ZXk_divides	6056731
ZXk_divides_i	2729793
ZXk_divides_s	9817442
ZXk_gcd	1650183
ZXk_gcd_i	8452874
ZXk_renormalize	4811447
_gcd	19415
centeri2n	3134158
chk_factors	140
chk_factors_get	350
cmbf	50778
cmbf_precs	50778
combine_factors	50778
dividesii	3375763
fact_from_DDF	38122
factor_bound	61278
invphi	19737
myconcat	2310
next2pow	14
nfrootsQ	1876643
pick_prime	2082877
polcyclofactors	315
poliscyclo	99193
poliscycloprod	1029
rec	1663476
root_bound	111064
shifteval	184864

Generated by: LCOV version 1.16