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 - grossenchar.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30862-ea47bd413c) Lines: 1033 1048 98.6 % Date: 2026-05-05 09:26:54 Functions: 66 66 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
eulerf_gchar	28
gchar_algebraic_basis	70
gcharlog	70
col_2ei	112
gchar_algebraicnormtype	154
gcharisalgebraic	189
gchar_algebraicoftype	210
gchar_conductor	224
gchari_conductor	224
cm_select	231
gcharalgebraic	280
gcharlocal	497
lfungchar	519
bestS	637
compute_Lcyc	637
gcharDLdata	637
gchar_hnfreduce_shallow	637
gchar_snfbasis_shallow	637
localstar	637
gcharinit	658
lll_block	740
vecan_gchar	840
hnf_block	1239
rowreverse	1239
conductor_expo_pr	1358
cleanup_vga	1590
gchari_lfun	1639
gcharduallog	1799
gcharmat_tinverse	1827
gcharlog_conductor_f	1856
gchar_Sval	1925
gchar_nflog	1925
gcharmatnewprec_shallow	1996
sprk_get_ncp	2051
gcharnewprec	2107
gcharnewprec_i	2107
check_gchari	2507
safelgcols	2507
shallowmatinsert	2586
vec_v0	2586
mextraprec	3006
gchar_identify_i	3941
gchareval	3969
gchar_identify	4011
gchar_identify_init	4011
same_arg	4795
vaffect_shallow	4795
shallow_clean_rat	5048
embedcol	6713
check_gchar	7197
gchar_internal	7197
is_gchar_group	9038
gchari_duallog	9136
check_gchar_i	9683
check_gchar_group	11558
check_localstar	13651
_check_gchar_group	13665
gcharlog_conductor_oo	17130
RgV_frac_inplace	24410
gchari_eval	188692
gchar_log	192479
gcharisprincipal	192479
gchar_logm	194404
nfembedlog	199199
gcharlog_eval_raw	203350
gaddmul	2498657

Generated by: LCOV version 1.16