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 30849-48ff4d246c) Lines: 1610 1786 90.1 % Date: 2026-05-01 09:26:53 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364248
FpM_hnfend	3364468
FpV_Fp_mul_part_ip	5412032
FpV_red_part_ipvec	37719952
Minus	2994962
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41254414
ZC_lincomb1z	29906246
ZC_lincomb1z_i	29929061
ZM_hnf	90340
ZM_hnf_knapsack	238
ZM_hnfall	29385
ZM_hnfall_i	752656
ZM_hnfcenter	25172
ZM_hnfintersectmod	28
ZM_hnflll	309178
ZM_hnfmod	162610
ZM_hnfmodall	5140386
ZM_hnfmodall_i	5191502
ZM_hnfmodid	4537446
ZM_hnfmodprime	3364108
ZM_hnfperm	385
ZM_redpart	1689731
ZM_reduce	4474049
ZM_rowrankprofile	303661
ZM_snf	15925
ZM_snf_group	764331
ZM_snf_no_divide	1301781
ZM_snfall	64239
ZM_snfall_i	848046
ZM_snfclean	1081383
ZMrow_divexact_inplace	1070729
ZV_allequal	322715
ZV_extgcd	110572
ZV_gcdext_i	111776
ZV_hnfgcdext	1211
ZV_snf_group	316938
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316938
ZV_snfclean	227091
ZpM_echelon	528241
addmulzii	583118615
addzi	277082127
affii2_or_copy_gc	54233591
allhnfmod	438538
bezout_step	890562
col_dup	3768829
col_mul	3367383
count	10216059
count2	554636
do_zero	0
findi	128655914
findi_normalize	128635881
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197524
hnf_i	62460
hnf_invimage	547532
hnf_invscale	275323
hnf_solve	461148
hnfadd	0
hnfadd_i	117315
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303662
hnflll	7
hnfmerge_get_1	815981
hnfmod	14
hnfmodid	438524
hnfperm	14
hnfspec	0
hnfspec_i	186343
hnfswap	11616461
is_RgX	2590
mathnf0	1477
mathnfspec	0
matsnf0	469
must_swap	6189457
negcmpii	602527
normalize_as_RgX	364
optimal_D	5189534
p_mat	0
reduce1	1013907
reduce2	64284112
remove_0cols	336555
reverse_rows	618297
smith	385
smithall	35
smithclean	693
snf_group	1081387
snf_pile	1123478
snf_pile1	48
snfrank	154
subzi	7910869
trivsmith	0
update	841876
zlm_echelon	4802481
zv_snf_rank	0

Generated by: LCOV version 1.16