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 30590-f14e077362) Lines: 1603 1779 90.1 % Date: 2026-01-02 09:20:44 Functions: 96 106 90.6 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364142
FpM_hnfend	3364312
FpV_Fp_mul_part_ip	5411529
FpV_red_part_ipvec	37682202
Minus	2056075
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41182765
ZC_lincomb1z	21882832
ZC_lincomb1z_i	21892305
ZM_hnf	89379
ZM_hnf_knapsack	238
ZM_hnfall	29184
ZM_hnfall_i	752460
ZM_hnfcenter	25166
ZM_hnflll	232518
ZM_hnfmod	162546
ZM_hnfmodall	5134046
ZM_hnfmodall_i	5185177
ZM_hnfmodid	4531468
ZM_hnfmodprime	3364143
ZM_hnfperm	385
ZM_redpart	1551722
ZM_reduce	4470442
ZM_rowrankprofile	226990
ZM_snf	15925
ZM_snf_group	712624
ZM_snf_no_divide	1235287
ZM_snfall	64183
ZM_snfall_i	796277
ZM_snfclean	1029525
ZMrow_divexact_inplace	976398
ZV_allequal	322708
ZV_extgcd	110572
ZV_gcdext_i	110586
ZV_hnfgcdext	21
ZV_snf_group	316797
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316797
ZV_snfclean	227088
ZpM_echelon	528154
addmulzii	520321950
addzi	240212864
affii2_or_copy_gc	48025853
allhnfmod	438207
bezout_step	820355
col_dup	2614839
col_mul	3086711
count	8159213
count2	421084
do_zero	0
findi	106426011
findi_normalize	106414117
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197495
hnf_i	61701
hnf_invimage	547535
hnf_invscale	275325
hnf_solve	461160
hnfadd	0
hnfadd_i	92429
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	226992
hnflll	7
hnfmerge_get_1	815975
hnfmod	14
hnfmodid	438194
hnfperm	14
hnfspec	0
hnfspec_i	134561
hnfswap	8502096
is_RgX	2590
mathnf0	287
mathnfspec	0
matsnf0	469
must_swap	4624800
negcmpii	602158
normalize_as_RgX	364
optimal_D	5183172
p_mat	0
reduce1	967385
reduce2	53192379
remove_0cols	335611
reverse_rows	465021
smith	385
smithall	35
smithclean	693
snf_group	1029524
snf_pile	1071637
snf_pile1	48
snfrank	154
subzi	6476782
trivsmith	0
update	771699
zlm_echelon	4801521
zv_snf_rank	0

Generated by: LCOV version 1.16