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 30744-52374ab6cf) Lines: 1603 1779 90.1 % Date: 2026-03-17 09:26:37 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	238
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
mathnf0	637
smithclean	693
gbezout_step	882
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25172
ZM_hnfall	29331
hnf_i	62124
ZM_snfall	64239
ZM_hnf	89950
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117546
ZM_hnfmod	162603
hnfspec_i	186364
hnf_divscale	197497
ZV_snfclean	227091
hnf_invscale	275322
ZM_rowrankprofile	303910
hnffinal	303910
ZM_hnflll	309439
ZV_snf_group	316940
ZV_snfall	316940
ZV_allequal	322715
remove_0cols	336190
hnfmodid	438494
allhnfmod	438508
hnf_solve	461166
ZpM_echelon	528234
hnf_invimage	547535
count2	554808
negcmpii	602527
reverse_rows	618851
ZM_hnfall_i	752610
ZM_snf_group	764406
hnfmerge_get_1	815986
update	841898
ZM_snfall_i	848117
bezout_step	890536
reduce1	967385
ZMrow_divexact_inplace	1070804
ZM_snfclean	1081406
snf_group	1081406
snf_pile	1123513
ZM_snf_no_divide	1301830
ZM_redpart	1689871
Minus	2997393
FpM_echelon	3364206
ZM_hnfmodprime	3364224
FpM_hnfend	3364415
col_mul	3367528
col_dup	3769285
ZM_reduce	4475244
ZM_hnfmodid	4537508
zlm_echelon	4802474
ZM_hnfmodall	5140464
optimal_D	5189735
ZM_hnfmodall_i	5191573
FpV_Fp_mul_part_ip	5412212
must_swap	6183144
subzi	7913439
count	10217624
hnfswap	11620322
ZC_lincomb1z	29951006
ZC_lincomb1z_i	29964158
FpV_red_part_ipvec	37727425
ZC_elem	41265249
affii2_or_copy_gc	54309456
reduce2	64368310
findi_normalize	128769155
findi	128788023
addzi	278073349
addmulzii	584112047

Generated by: LCOV version 1.16