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 30848-b1463d63da) Lines: 1612 1786 90.3 % Date: 2026-04-30 09:27:33 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364292
FpM_hnfend	3364433
FpV_Fp_mul_part_ip	5411911
FpV_red_part_ipvec	37721364
Minus	2996091
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41258501
ZC_lincomb1z	29912359
ZC_lincomb1z_i	29937936
ZM_hnf	90288
ZM_hnf_knapsack	238
ZM_hnfall	29332
ZM_hnfall_i	752605
ZM_hnfcenter	25169
ZM_hnfintersectmod	28
ZM_hnflll	309324
ZM_hnfmod	162606
ZM_hnfmodall	5140444
ZM_hnfmodall_i	5191541
ZM_hnfmodid	4537456
ZM_hnfmodprime	3364276
ZM_hnfperm	385
ZM_redpart	1689566
ZM_reduce	4475970
ZM_rowrankprofile	303809
ZM_snf	15925
ZM_snf_group	764370
ZM_snf_no_divide	1301750
ZM_snfall	64239
ZM_snfall_i	848076
ZM_snfclean	1081403
ZMrow_divexact_inplace	1070757
ZV_allequal	322708
ZV_extgcd	110572
ZV_gcdext_i	111776
ZV_hnfgcdext	1211
ZV_snf_group	316938
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316938
ZV_snfclean	227089
ZpM_echelon	528229
addmulzii	582874782
addzi	277088496
affii2_or_copy_gc	54250031
allhnfmod	438537
bezout_step	890533
col_dup	3768907
col_mul	3367370
count	10216217
count2	555252
do_zero	0
findi	128715437
findi_normalize	128696591
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197509
hnf_i	62461
hnf_invimage	547538
hnf_invscale	275326
hnf_solve	461160
hnfadd	0
hnfadd_i	117455
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303809
hnflll	7
hnfmerge_get_1	815986
hnfmod	14
hnfmodid	438523
hnfperm	14
hnfspec	0
hnfspec_i	186353
hnfswap	11621630
is_RgX	2590
mathnf0	1477
mathnfspec	0
matsnf0	469
must_swap	6190169
negcmpii	602523
normalize_as_RgX	364
optimal_D	5189529
p_mat	0
reduce1	1013907
reduce2	64314058
remove_0cols	336504
reverse_rows	618608
smith	385
smithall	35
smithclean	693
snf_group	1081401
snf_pile	1123466
snf_pile1	48
snfrank	154
subzi	7914644
trivsmith	0
update	841866
zlm_echelon	4802355
zv_snf_rank	0

Generated by: LCOV version 1.16