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 30735-65f72320ad) Lines: 1603 1779 90.1 % Date: 2026-03-11 09:24:10 Functions: 96 106 90.6 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364249
FpM_hnfend	3364298
FpV_Fp_mul_part_ip	5412090
FpV_red_part_ipvec	37731362
Minus	2993402
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41267067
ZC_lincomb1z	29912993
ZC_lincomb1z_i	29934416
ZM_hnf	89600
ZM_hnf_knapsack	238
ZM_hnfall	29327
ZM_hnfall_i	752601
ZM_hnfcenter	25170
ZM_hnflll	308971
ZM_hnfmod	162602
ZM_hnfmodall	5140584
ZM_hnfmodall_i	5191686
ZM_hnfmodid	4537641
ZM_hnfmodprime	3364251
ZM_hnfperm	385
ZM_redpart	1690139
ZM_reduce	4473578
ZM_rowrankprofile	303439
ZM_snf	15925
ZM_snf_group	764414
ZM_snf_no_divide	1301902
ZM_snfall	64239
ZM_snfall_i	848126
ZM_snfclean	1081395
ZMrow_divexact_inplace	1070846
ZV_allequal	322714
ZV_extgcd	110572
ZV_gcdext_i	110586
ZV_hnfgcdext	21
ZV_snf_group	316943
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316943
ZV_snfclean	227089
ZpM_echelon	528222
addmulzii	583821473
addzi	277861563
affii2_or_copy_gc	54278075
allhnfmod	438507
bezout_step	890584
col_dup	3769252
col_mul	3367721
count	10216501
count2	554724
do_zero	0
findi	128583479
findi_normalize	128575776
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197487
hnf_i	61778
hnf_invimage	547536
hnf_invscale	275323
hnf_solve	461162
hnfadd	0
hnfadd_i	117077
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303441
hnflll	7
hnfmerge_get_1	815977
hnfmod	14
hnfmodid	438493
hnfperm	14
hnfspec	0
hnfspec_i	186366
hnfswap	11599819
is_RgX	2590
mathnf0	287
mathnfspec	0
matsnf0	469
must_swap	6169299
negcmpii	602526
normalize_as_RgX	364
optimal_D	5189773
p_mat	0
reduce1	967385
reduce2	64283913
remove_0cols	335837
reverse_rows	617915
smith	385
smithall	35
smithclean	693
snf_group	1081400
snf_pile	1123496
snf_pile1	48
snfrank	154
subzi	7907975
trivsmith	0
update	841945
zlm_echelon	4802459
zv_snf_rank	0

Generated by: LCOV version 1.16