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 30622-caa25a75db) Lines: 1603 1779 90.1 % Date: 2026-01-22 09:18:00 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	237
mathnf0	287
normalize_as_RgX	364
ZM_hnfperm	384
smith	384
matsnf0	468
RgC_elem	511
smithclean	674
gbezout_step	882
is_RgX	2590
ZM_snf	15899
ZM_hnfcenter	22579
ZM_hnfall	27173
hnf_i	57094
ZM_snfall	58411
ZM_hnf	82778
hnfadd_i	88381
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfspec_i	128795
ZM_hnfmod	150799
hnf_divscale	190884
ZV_snfclean	199245
ZM_rowrankprofile	217177
hnffinal	217177
ZM_hnflll	222697
hnf_invscale	247554
ZV_snf_group	292077
ZV_snfall	292077
ZV_allequal	301890
remove_0cols	303627
count2	409314
hnfmodid	422079
allhnfmod	422093
hnf_solve	426340
reverse_rows	445375
ZpM_echelon	474384
hnf_invimage	506759
negcmpii	560331
ZM_snf_group	648279
update	712238
ZM_hnfall_i	718568
ZM_snfall_i	726135
hnfmerge_get_1	755337
bezout_step	760808
ZMrow_divexact_inplace	896198
ZM_snfclean	940356
snf_group	940357
reduce1	967385
snf_pile	980998
ZM_snf_no_divide	1127452
ZM_redpart	1419756
Minus	2013843
col_dup	2546810
col_mul	2848934
FpM_echelon	3216731
ZM_hnfmodprime	3216733
FpM_hnfend	3216809
ZM_reduce	4254570
ZM_hnfmodid	4339121
must_swap	4480811
zlm_echelon	4501412
ZM_hnfmodall	4913933
optimal_D	4960127
ZM_hnfmodall_i	4961681
FpV_Fp_mul_part_ip	5199903
subzi	6329540
count	8083005
hnfswap	8318382
ZC_lincomb1z	21569327
ZC_lincomb1z_i	21575973
FpV_red_part_ipvec	36211175
ZC_elem	39614788
affii2_or_copy_gc	47664507
reduce2	52176539
findi_normalize	104384560
findi	104394245
addzi	238250966
addmulzii	516116143

Generated by: LCOV version 1.16