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 30792-987d9c52f6) Lines: 1610 1786 90.1 % Date: 2026-04-09 09:26:26 Functions: 97 107 90.7 % 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
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
mathnf0	287
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
smithclean	693
gbezout_step	882
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25162
ZM_hnfall	29324
hnf_i	62124
ZM_snfall	64239
ZM_hnf	89943
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117321
ZM_hnfmod	162600
hnfspec_i	186363
hnf_divscale	197488
ZV_snfclean	227085
hnf_invscale	275322
ZM_rowrankprofile	303682
hnffinal	303683
ZM_hnflll	309198
ZV_snf_group	316941
ZV_snfall	316941
ZV_allequal	322718
remove_0cols	336154
hnfmodid	438496
allhnfmod	438510
hnf_solve	461172
ZpM_echelon	528230
hnf_invimage	547537
count2	555022
negcmpii	602514
reverse_rows	618371
ZM_hnfall_i	752599
ZM_snf_group	764391
hnfmerge_get_1	815970
update	841915
ZM_snfall_i	848104
bezout_step	890586
reduce1	967385
ZMrow_divexact_inplace	1070782
ZM_snfclean	1081401
snf_group	1081403
snf_pile	1123490
ZM_snf_no_divide	1301863
ZM_redpart	1689813
Minus	2994914
FpM_echelon	3364087
ZM_hnfmodprime	3364182
FpM_hnfend	3364412
col_mul	3367616
col_dup	3769173
ZM_reduce	4474396
ZM_hnfmodid	4537160
zlm_echelon	4802375
ZM_hnfmodall	5140094
optimal_D	5189234
ZM_hnfmodall_i	5191193
FpV_Fp_mul_part_ip	5411978
must_swap	6176988
subzi	7911455
count	10215595
hnfswap	11606018
ZC_lincomb1z	29904768
ZC_lincomb1z_i	29932726
FpV_red_part_ipvec	37720176
ZC_elem	41258248
affii2_or_copy_gc	54235514
reduce2	64290162
findi_normalize	128637038
findi	128659691
addzi	276781953
addmulzii	582682800

Generated by: LCOV version 1.16