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 30735-65f72320ad) Lines: 1605 1779 90.2 % Date: 2026-03-16 09:23:47 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	25163
ZM_hnfall	29312
hnf_i	61772
ZM_snfall	64239
ZM_hnf	89579
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	116814
ZM_hnfmod	162600
hnfspec_i	186364
hnf_divscale	197490
ZV_snfclean	227088
hnf_invscale	275327
ZM_rowrankprofile	303177
hnffinal	303177
ZM_hnflll	308707
ZV_snfall	316938
ZV_snf_group	316939
ZV_allequal	322715
remove_0cols	335814
hnfmodid	438496
allhnfmod	438510
hnf_solve	461168
ZpM_echelon	528244
hnf_invimage	547539
count2	554594
negcmpii	602516
reverse_rows	617379
ZM_hnfall_i	752586
ZM_snf_group	764405
hnfmerge_get_1	815977
update	842062
ZM_snfall_i	848121
bezout_step	890693
reduce1	967385
ZMrow_divexact_inplace	1070823
ZM_snfclean	1081406
snf_group	1081413
snf_pile	1123504
ZM_snf_no_divide	1302005
ZM_redpart	1690363
Minus	2991167
ZM_hnfmodprime	3364214
FpM_echelon	3364215
FpM_hnfend	3364351
col_mul	3368152
col_dup	3769122
ZM_reduce	4474586
ZM_hnfmodid	4537457
zlm_echelon	4802463
ZM_hnfmodall	5140329
optimal_D	5189617
ZM_hnfmodall_i	5191520
FpV_Fp_mul_part_ip	5412032
must_swap	6162913
subzi	7900023
count	10215917
hnfswap	11588684
ZC_lincomb1z	29880887
ZC_lincomb1z_i	29900805
FpV_red_part_ipvec	37730146
ZC_elem	41267312
affii2_or_copy_gc	54245150
reduce2	64231694
findi_normalize	128478370
findi	128494440
addzi	277316801
addmulzii	583166602

Generated by: LCOV version 1.16