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 30861-40e9da58f9) Lines: 1610 1786 90.1 % Date: 2026-05-04 09:27:01 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3365706
FpM_hnfend	3365987
FpV_Fp_mul_part_ip	5413380
FpV_red_part_ipvec	37728400
Minus	2995453
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41253791
ZC_lincomb1z	29905627
ZC_lincomb1z_i	29928146
ZM_hnf	90298
ZM_hnf_knapsack	238
ZM_hnfall	29315
ZM_hnfall_i	752596
ZM_hnfcenter	25178
ZM_hnfintersectmod	28
ZM_hnflll	309307
ZM_hnfmod	162636
ZM_hnfmodall	5142052
ZM_hnfmodall_i	5193156
ZM_hnfmodid	4539078
ZM_hnfmodprime	3365710
ZM_hnfperm	385
ZM_redpart	1689670
ZM_reduce	4467781
ZM_rowrankprofile	303791
ZM_snf	15925
ZM_snf_group	764372
ZM_snf_no_divide	1301793
ZM_snfall	64246
ZM_snfall_i	848089
ZM_snfclean	1081411
ZMrow_divexact_inplace	1070773
ZV_allequal	322719
ZV_extgcd	110579
ZV_gcdext_i	111783
ZV_hnfgcdext	1211
ZV_snf_group	316939
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316938
ZV_snfclean	227091
ZpM_echelon	528231
addmulzii	583100516
addzi	276986507
affii2_or_copy_gc	54226144
allhnfmod	438542
bezout_step	890528
col_dup	3769192
col_mul	3367316
count	10216071
count2	554637
do_zero	0
findi	128683098
findi_normalize	128664331
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197514
hnf_i	62488
hnf_invimage	547545
hnf_invscale	275319
hnf_solve	461166
hnfadd	0
hnfadd_i	117423
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303792
hnflll	7
hnfmerge_get_1	815976
hnfmod	14
hnfmodid	438528
hnfperm	14
hnfspec	0
hnfspec_i	186363
hnfswap	11618910
is_RgX	2590
mathnf0	1477
mathnfspec	0
matsnf0	469
must_swap	6188351
negcmpii	602527
normalize_as_RgX	364
optimal_D	5191118
p_mat	0
reduce1	1013921
reduce2	64295028
remove_0cols	336515
reverse_rows	618569
smith	385
smithall	35
smithclean	693
snf_group	1081415
snf_pile	1123484
snf_pile1	48
snfrank	154
subzi	7910559
trivsmith	0
update	841841
zlm_echelon	4803784
zv_snf_rank	0

Generated by: LCOV version 1.16