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 30862-ea47bd413c) Lines: 1610 1786 90.1 % Date: 2026-05-06 09:26:47 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
gbezout_step	882
ZV_hnfgcdext	1211
mathnf0	1477
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25174
ZM_hnfall	29336
hnf_i	62520
ZM_snfall	64243
ZM_hnf	90351
ZV_extgcd	110579
ZV_gcdext_i	111783
hnfadd_i	117257
ZM_hnfmod	162636
hnfspec_i	186355
hnf_divscale	197528
ZV_snfclean	227088
hnf_invscale	275324
ZM_rowrankprofile	303621
hnffinal	303622
ZM_hnflll	309137
ZV_snf_group	316936
ZV_snfall	316936
ZV_allequal	322723
remove_0cols	336566
hnfmodid	438523
allhnfmod	438536
hnf_solve	461165
ZpM_echelon	528227
hnf_invimage	547538
count2	554673
negcmpii	602522
reverse_rows	618243
ZM_hnfall_i	752613
ZM_snf_group	764366
hnfmerge_get_1	815982
update	841971
ZM_snfall_i	848059
bezout_step	890629
reduce1	1013921
ZMrow_divexact_inplace	1070772
ZM_snfclean	1081399
snf_group	1081405
snf_pile	1123487
ZM_snf_no_divide	1301872
ZM_redpart	1689942
Minus	2994685
FpM_echelon	3365684
ZM_hnfmodprime	3365689
FpM_hnfend	3365974
col_mul	3367782
col_dup	3769145
ZM_reduce	4475579
ZM_hnfmodid	4539210
zlm_echelon	4803807
ZM_hnfmodall	5142184
optimal_D	5191280
ZM_hnfmodall_i	5193303
FpV_Fp_mul_part_ip	5413475
must_swap	6188716
subzi	7909147
count	10216686
hnfswap	11614522
ZC_lincomb1z	29903735
ZC_lincomb1z_i	29923831
FpV_red_part_ipvec	37729660
ZC_elem	41263399
affii2_or_copy_gc	54235837
reduce2	64280876
findi_normalize	128625679
findi	128648108
addzi	277115411
addmulzii	583192252

Generated by: LCOV version 1.16