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) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 90.2 % 1787 1611 Test Date: 2026-07-23 17:04:59 Functions: 90.7 % 107 97 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
hnfallgen	21
ZM_hnfintersectmod	28
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
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
gbezout_step	882
smithclean	952
ZV_hnfgcdext	1162
mathnf0	1428
is_RgX	2590
ZM_snf	16184
ZM_hnfcenter	25387
ZM_hnfall	29170
hnf_i	62582
ZM_snfall	64246
ZM_hnf	90247
ZV_extgcd	110579
ZV_gcdext_i	111734
hnfadd_i	117278
ZM_hnfmod	162656
hnfspec_i	186566
hnf_divscale	197801
ZV_snfclean	227101
hnf_invscale	275331
ZM_rowrankprofile	303844
hnffinal	303844
ZM_hnflll	309360
ZV_snf_group	316947
ZV_snfall	316947
ZV_allequal	322729
remove_0cols	336479
hnfmodid	438566
allhnfmod	438580
hnf_solve	461209
ZpM_echelon	529499
hnf_invimage	547578
count2	555329
negcmpii	602537
reverse_rows	618720
ZM_hnfall_i	752457
ZM_snf_group	764697
hnfmerge_get_1	816035
update	842440
ZM_snfall_i	848676
bezout_step	891006
reduce1	1016504
ZMrow_divexact_inplace	1071268
ZM_snfclean	1081644
snf_group	1081644
snf_pile	1124029
ZM_snf_no_divide	1302063
ZM_redpart	1690757
Minus	2997278
FpM_echelon	3366410
FpM_hnfend	3366410
ZM_hnfmodprime	3366410
col_mul	3369760
col_dup	3771826
ZM_reduce	4454982
ZM_hnfmodid	4542452
zlm_echelon	4808736
ZM_hnfmodall	5145621
optimal_D	5195213
ZM_hnfmodall_i	5196851
FpV_Fp_mul_part_ip	5420872
must_swap	6205727
subzi	7929808
count	10218390
hnfswap	11659440
ZC_lincomb1z	30080471
ZC_lincomb1z_i	30080471
FpV_red_part_ipvec	37830162
ZC_elem	41407713
affii2_or_copy_gc	54526249
reduce2	64584596
findi	129171008
findi_normalize	129171008
addzi	283906255
addmulzii	592164488

Generated by: LCOV version 2.0-1