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 31041-bd73e9fcdd) Lines: 90.2 % 1787 1611 Test Date: 2026-07-22 22:45:42 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	25386
ZM_hnfall	29132
hnf_i	62573
ZM_snfall	64246
ZM_hnf	90200
ZV_extgcd	110579
ZV_gcdext_i	111734
hnfadd_i	117162
ZM_hnfmod	162654
hnfspec_i	186566
hnf_divscale	197799
ZV_snfclean	227089
hnf_invscale	275317
ZM_rowrankprofile	303730
hnffinal	303732
ZM_hnflll	309248
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322725
remove_0cols	336405
hnfmodid	438563
allhnfmod	438577
hnf_solve	461166
ZpM_echelon	529494
hnf_invimage	547546
count2	555163
negcmpii	602523
reverse_rows	618453
ZM_hnfall_i	752395
ZM_snf_group	764579
hnfmerge_get_1	815992
update	842186
ZM_snfall_i	848551
bezout_step	890824
reduce1	1016504
ZMrow_divexact_inplace	1071024
ZM_snfclean	1081621
snf_group	1081626
snf_pile	1123941
ZM_snf_no_divide	1301936
ZM_redpart	1690291
Minus	2997937
ZM_hnfmodprime	3365826
FpM_echelon	3365829
FpM_hnfend	3366057
col_mul	3368651
col_dup	3771363
ZM_reduce	4454360
ZM_hnfmodid	4541115
zlm_echelon	4808387
ZM_hnfmodall	5144165
optimal_D	5193532
ZM_hnfmodall_i	5195437
FpV_Fp_mul_part_ip	5420041
must_swap	6194166
subzi	7920362
count	10217204
hnfswap	11623926
ZC_lincomb1z	29921355
ZC_lincomb1z_i	29946093
FpV_red_part_ipvec	37791185
ZC_elem	41376744
affii2_or_copy_gc	54249264
reduce2	64303783
findi_normalize	128681547
findi	128703611
addzi	276985276
addmulzii	583027428

Generated by: LCOV version 2.0-1