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 30835-e55edf4b45) Lines: 1610 1786 90.1 % Date: 2026-04-24 09:27:20 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
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
smithclean	693
ZV_hnfgcdext	707
gbezout_step	882
mathnf0	973
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25169
ZM_hnfall	29307
hnf_i	62115
ZM_snfall	64238
ZM_hnf	89917
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117228
ZM_hnfmod	162599
hnfspec_i	186360
hnf_divscale	197490
ZV_snfclean	227094
hnf_invscale	275322
ZM_rowrankprofile	303588
hnffinal	303592
ZM_hnflll	309099
ZV_snfall	316936
ZV_snf_group	316937
ZV_allequal	322718
remove_0cols	336127
hnfmodid	438493
allhnfmod	438507
hnf_solve	461161
ZpM_echelon	528220
hnf_invimage	547538
count2	554598
negcmpii	602524
reverse_rows	618170
ZM_hnfall_i	752587
ZM_snf_group	764367
hnfmerge_get_1	815980
update	841846
ZM_snfall_i	848079
bezout_step	890508
reduce1	991087
ZMrow_divexact_inplace	1070785
ZM_snfclean	1081388
snf_group	1081397
snf_pile	1123382
ZM_snf_no_divide	1301752
ZM_redpart	1689720
Minus	2994845
FpM_echelon	3364194
ZM_hnfmodprime	3364201
FpM_hnfend	3364458
col_mul	3367312
col_dup	3769124
ZM_reduce	4469009
ZM_hnfmodid	4537258
zlm_echelon	4802329
ZM_hnfmodall	5140199
optimal_D	5189223
ZM_hnfmodall_i	5191311
FpV_Fp_mul_part_ip	5411989
must_swap	6180336
subzi	7908424
count	10213970
hnfswap	11609700
ZC_lincomb1z	29902416
ZC_lincomb1z_i	29926230
FpV_red_part_ipvec	37720736
ZC_elem	41251105
affii2_or_copy_gc	54229873
reduce2	64273337
findi_normalize	128609630
findi	128629479
addzi	277227285
addmulzii	583317926

Generated by: LCOV version 1.16