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 - hnf_snf.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30734-f1f26dedcb) Lines: 1603 1779 90.1 % Date: 2026-03-05 09:24:39 Functions: 96 106 90.6 % Legend: Lines: hit not hit

Function Name	Hit count
ZV_snf_trunc	0
do_zero	0
gsmith	0
gsmithall	0
hnfadd	0
hnfspec	0
mathnfspec	0
p_mat	0
trivsmith	0
zv_snf_rank	0
hnflll	7
hnf	14
hnfall	14
hnfmod	14
hnfperm	14
ZV_hnfgcdext	21
hnfallgen	21
smithall	35
RgM_hnfall	42
snf_pile1	48
RgXM_snf	49
ZV_snf_rank_u	49
RgM_reduce	84
ZV_snf_rank	91
hnfdivide	133
snfrank	154
gsnf_no_divide	196
ZM_hnf_knapsack	238
mathnf0	287
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
smithclean	693
gbezout_step	882
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25168
ZM_hnfall	29326
hnf_i	61774
ZM_snfall	64239
ZM_hnf	89595
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117139
ZM_hnfmod	162600
hnfspec_i	186359
hnf_divscale	197501
ZV_snfclean	227093
hnf_invscale	275328
ZM_rowrankprofile	303497
hnffinal	303499
ZM_hnflll	309027
ZV_snf_group	316939
ZV_snfall	316939
ZV_allequal	322717
remove_0cols	335837
hnfmodid	438493
allhnfmod	438507
hnf_solve	461157
ZpM_echelon	528233
hnf_invimage	547529
count2	554893
negcmpii	602522
reverse_rows	618027
ZM_hnfall_i	752603
ZM_snf_group	764393
hnfmerge_get_1	815991
update	841928
ZM_snfall_i	848107
bezout_step	890593
reduce1	967385
ZMrow_divexact_inplace	1070798
ZM_snfclean	1081402
snf_group	1081402
snf_pile	1123496
ZM_snf_no_divide	1301887
ZM_redpart	1690088
Minus	2994045
ZM_hnfmodprime	3364226
FpM_echelon	3364232
FpM_hnfend	3364433
col_mul	3367609
col_dup	3769138
ZM_reduce	4471535
ZM_hnfmodid	4537635
zlm_echelon	4802500
ZM_hnfmodall	5140562
optimal_D	5189734
ZM_hnfmodall_i	5191663
FpV_Fp_mul_part_ip	5412089
must_swap	6170376
subzi	7908140
count	10217622
hnfswap	11598597
ZC_lincomb1z	29911673
ZC_lincomb1z_i	29929355
FpV_red_part_ipvec	37729273
ZC_elem	41260566
affii2_or_copy_gc	54258442
reduce2	64290779
findi_normalize	128613089
findi	128642503
addzi	277567153
addmulzii	583416895

Generated by: LCOV version 1.16