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 30831-19b50a36d0) Lines: 1610 1786 90.1 % Date: 2026-04-21 09:26:02 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	25168
ZM_hnfall	29330
hnf_i	62116
ZM_snfall	64238
ZM_hnf	89941
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117252
ZM_hnfmod	162598
hnfspec_i	186365
hnf_divscale	197483
ZV_snfclean	227090
hnf_invscale	275316
ZM_rowrankprofile	303616
hnffinal	303617
ZM_hnflll	309131
ZV_snf_group	316932
ZV_snfall	316932
ZV_allequal	322718
remove_0cols	336168
hnfmodid	438494
allhnfmod	438508
hnf_solve	461150
ZpM_echelon	528241
hnf_invimage	547533
count2	554609
negcmpii	602523
reverse_rows	618225
ZM_hnfall_i	752605
ZM_snf_group	764368
hnfmerge_get_1	815982
update	841926
ZM_snfall_i	848073
bezout_step	890557
reduce1	991087
ZMrow_divexact_inplace	1070782
ZM_snfclean	1081398
snf_group	1081404
snf_pile	1123483
ZM_snf_no_divide	1301820
ZM_redpart	1689715
Minus	2994763
ZM_hnfmodprime	3364159
FpM_echelon	3364167
FpM_hnfend	3364412
col_mul	3367605
col_dup	3769095
ZM_reduce	4465574
ZM_hnfmodid	4537480
zlm_echelon	4802341
ZM_hnfmodall	5140368
optimal_D	5189529
ZM_hnfmodall_i	5191489
FpV_Fp_mul_part_ip	5412046
must_swap	6177959
subzi	7904629
count	10214402
hnfswap	11604102
ZC_lincomb1z	29891688
ZC_lincomb1z_i	29912817
FpV_red_part_ipvec	37720751
ZC_elem	41246712
affii2_or_copy_gc	54220499
reduce2	64246969
findi_normalize	128565653
findi	128589314
addzi	276942354
addmulzii	582982761

Generated by: LCOV version 1.16