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 30813-28f64e5615) Lines: 1612 1786 90.3 % Date: 2026-04-14 09:26:12 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	25173
ZM_hnfall	29381
hnf_i	62118
ZM_snfall	64239
ZM_hnf	89994
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117243
ZM_hnfmod	162602
hnfspec_i	186359
hnf_divscale	197485
ZV_snfclean	227085
hnf_invscale	275325
ZM_rowrankprofile	303604
hnffinal	303605
ZM_hnflll	309112
ZV_snf_group	316933
ZV_snfall	316933
ZV_allequal	322711
remove_0cols	336215
hnfmodid	438490
allhnfmod	438504
hnf_solve	461137
ZpM_echelon	528223
hnf_invimage	547522
count2	554421
negcmpii	602521
reverse_rows	618197
ZM_hnfall_i	752648
ZM_snf_group	764359
hnfmerge_get_1	815965
update	841659
ZM_snfall_i	848080
bezout_step	890327
reduce1	991087
ZMrow_divexact_inplace	1070791
ZM_snfclean	1081381
snf_group	1081387
snf_pile	1123464
ZM_snf_no_divide	1301646
ZM_redpart	1689296
Minus	2994792
ZM_hnfmodprime	3363980
FpM_echelon	3364168
FpM_hnfend	3364461
col_mul	3366576
col_dup	3769126
ZM_reduce	4473997
ZM_hnfmodid	4537426
zlm_echelon	4802254
ZM_hnfmodall	5140309
optimal_D	5189531
ZM_hnfmodall_i	5191411
FpV_Fp_mul_part_ip	5411973
must_swap	6182336
subzi	7908449
count	10216678
hnfswap	11607998
ZC_lincomb1z	29890583
ZC_lincomb1z_i	29912783
FpV_red_part_ipvec	37720754
ZC_elem	41256486
affii2_or_copy_gc	54225111
reduce2	64252266
findi_normalize	128581343
findi	128609090
addzi	276744979
addmulzii	582701068

Generated by: LCOV version 1.16