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 30744-52374ab6cf) Lines: 1603 1779 90.1 % Date: 2026-03-17 09:26:37 Functions: 96 106 90.6 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364206
FpM_hnfend	3364415
FpV_Fp_mul_part_ip	5412212
FpV_red_part_ipvec	37727425
Minus	2997393
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41265249
ZC_lincomb1z	29951006
ZC_lincomb1z_i	29964158
ZM_hnf	89950
ZM_hnf_knapsack	238
ZM_hnfall	29331
ZM_hnfall_i	752610
ZM_hnfcenter	25172
ZM_hnflll	309439
ZM_hnfmod	162603
ZM_hnfmodall	5140464
ZM_hnfmodall_i	5191573
ZM_hnfmodid	4537508
ZM_hnfmodprime	3364224
ZM_hnfperm	385
ZM_redpart	1689871
ZM_reduce	4475244
ZM_rowrankprofile	303910
ZM_snf	15925
ZM_snf_group	764406
ZM_snf_no_divide	1301830
ZM_snfall	64239
ZM_snfall_i	848117
ZM_snfclean	1081406
ZMrow_divexact_inplace	1070804
ZV_allequal	322715
ZV_extgcd	110572
ZV_gcdext_i	110586
ZV_hnfgcdext	21
ZV_snf_group	316940
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316940
ZV_snfclean	227091
ZpM_echelon	528234
addmulzii	584112047
addzi	278073349
affii2_or_copy_gc	54309456
allhnfmod	438508
bezout_step	890536
col_dup	3769285
col_mul	3367528
count	10217624
count2	554808
do_zero	0
findi	128788023
findi_normalize	128769155
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197497
hnf_i	62124
hnf_invimage	547535
hnf_invscale	275322
hnf_solve	461166
hnfadd	0
hnfadd_i	117546
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303910
hnflll	7
hnfmerge_get_1	815986
hnfmod	14
hnfmodid	438494
hnfperm	14
hnfspec	0
hnfspec_i	186364
hnfswap	11620322
is_RgX	2590
mathnf0	637
mathnfspec	0
matsnf0	469
must_swap	6183144
negcmpii	602527
normalize_as_RgX	364
optimal_D	5189735
p_mat	0
reduce1	967385
reduce2	64368310
remove_0cols	336190
reverse_rows	618851
smith	385
smithall	35
smithclean	693
snf_group	1081406
snf_pile	1123513
snf_pile1	48
snfrank	154
subzi	7913439
trivsmith	0
update	841898
zlm_echelon	4802474
zv_snf_rank	0

Generated by: LCOV version 1.16