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 30861-40e9da58f9) Lines: 1610 1786 90.1 % Date: 2026-05-04 09:27:01 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	25178
ZM_hnfall	29315
hnf_i	62488
ZM_snfall	64246
ZM_hnf	90298
ZV_extgcd	110579
ZV_gcdext_i	111783
hnfadd_i	117423
ZM_hnfmod	162636
hnfspec_i	186363
hnf_divscale	197514
ZV_snfclean	227091
hnf_invscale	275319
ZM_rowrankprofile	303791
hnffinal	303792
ZM_hnflll	309307
ZV_snfall	316938
ZV_snf_group	316939
ZV_allequal	322719
remove_0cols	336515
hnfmodid	438528
allhnfmod	438542
hnf_solve	461166
ZpM_echelon	528231
hnf_invimage	547545
count2	554637
negcmpii	602527
reverse_rows	618569
ZM_hnfall_i	752596
ZM_snf_group	764372
hnfmerge_get_1	815976
update	841841
ZM_snfall_i	848089
bezout_step	890528
reduce1	1013921
ZMrow_divexact_inplace	1070773
ZM_snfclean	1081411
snf_group	1081415
snf_pile	1123484
ZM_snf_no_divide	1301793
ZM_redpart	1689670
Minus	2995453
FpM_echelon	3365706
ZM_hnfmodprime	3365710
FpM_hnfend	3365987
col_mul	3367316
col_dup	3769192
ZM_reduce	4467781
ZM_hnfmodid	4539078
zlm_echelon	4803784
ZM_hnfmodall	5142052
optimal_D	5191118
ZM_hnfmodall_i	5193156
FpV_Fp_mul_part_ip	5413380
must_swap	6188351
subzi	7910559
count	10216071
hnfswap	11618910
ZC_lincomb1z	29905627
ZC_lincomb1z_i	29928146
FpV_red_part_ipvec	37728400
ZC_elem	41253791
affii2_or_copy_gc	54226144
reduce2	64295028
findi_normalize	128664331
findi	128683098
addzi	276986507
addmulzii	583100516

Generated by: LCOV version 1.16