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 30719-2b7f142d49) Lines: 1603 1779 90.1 % Date: 2026-03-01 09:23:56 Functions: 96 106 90.6 % 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
ZV_hnfgcdext	21
hnfallgen	21
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
mathnf0	287
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
smithclean	693
gbezout_step	882
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25173
ZM_hnfall	29347
hnf_i	61724
ZM_snfall	64188
ZM_hnf	89565
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117198
ZM_hnfmod	162551
hnfspec_i	186319
hnf_divscale	197478
ZV_snfclean	227097
hnf_invscale	275324
hnffinal	303520
ZM_rowrankprofile	303521
ZM_hnflll	309051
ZV_snf_group	316937
ZV_snfall	316937
ZV_allequal	322715
remove_0cols	335799
hnfmodid	438103
allhnfmod	438117
hnf_solve	461154
ZpM_echelon	528137
hnf_invimage	547529
count2	554985
negcmpii	602530
reverse_rows	618072
ZM_hnfall_i	752623
ZM_snf_group	764408
hnfmerge_get_1	815988
update	842136
ZM_snfall_i	848068
bezout_step	890766
reduce1	967385
ZMrow_divexact_inplace	1070786
ZM_snfclean	1081286
snf_group	1081409
snf_pile	1123489
ZM_snf_no_divide	1302021
ZM_redpart	1690486
Minus	2993101
FpM_echelon	3364249
ZM_hnfmodprime	3364250
FpM_hnfend	3364400
col_mul	3368474
col_dup	3768753
ZM_reduce	4473934
ZM_hnfmodid	4537018
zlm_echelon	4801619
ZM_hnfmodall	5139567
optimal_D	5188643
ZM_hnfmodall_i	5190637
FpV_Fp_mul_part_ip	5411568
must_swap	6170306
subzi	7911057
count	10215204
hnfswap	11602254
ZC_lincomb1z	29916133
ZC_lincomb1z_i	29935240
FpV_red_part_ipvec	37718122
ZC_elem	41247287
affii2_or_copy_gc	54256994
reduce2	64301046
findi_normalize	128642469
findi	128670724
addzi	277721371
addmulzii	583923609

Generated by: LCOV version 1.16