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 30775-9d8a55740a) Lines: 1610 1786 90.1 % Date: 2026-04-06 09:26:18 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
ZV_hnfgcdext	21
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
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	25163
ZM_hnfall	29329
hnf_i	62123
ZM_snfall	64237
ZM_hnf	89947
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117059
ZM_hnfmod	162602
hnfspec_i	186360
hnf_divscale	197487
ZV_snfclean	227090
hnf_invscale	275321
ZM_rowrankprofile	303418
hnffinal	303419
ZM_hnflll	308935
ZV_snf_group	316934
ZV_snfall	316934
ZV_allequal	322713
remove_0cols	336161
hnfmodid	438499
allhnfmod	438513
hnf_solve	461157
ZpM_echelon	528219
hnf_invimage	547541
count2	554620
negcmpii	602520
reverse_rows	617831
ZM_hnfall_i	752606
ZM_snf_group	764378
hnfmerge_get_1	815967
update	841844
ZM_snfall_i	848087
bezout_step	890501
reduce1	967385
ZMrow_divexact_inplace	1070804
ZM_snfclean	1081382
snf_group	1081386
snf_pile	1123480
ZM_snf_no_divide	1301733
ZM_redpart	1689653
Minus	2993493
ZM_hnfmodprime	3364136
FpM_echelon	3364142
FpM_hnfend	3364381
col_mul	3367315
col_dup	3769141
ZM_reduce	4475816
ZM_hnfmodid	4537254
zlm_echelon	4802147
ZM_hnfmodall	5140076
optimal_D	5189371
ZM_hnfmodall_i	5191330
FpV_Fp_mul_part_ip	5412066
must_swap	6172521
subzi	7905666
count	10216318
hnfswap	11596229
ZC_lincomb1z	29882638
ZC_lincomb1z_i	29907420
FpV_red_part_ipvec	37722039
ZC_elem	41261624
affii2_or_copy_gc	54213967
reduce2	64231074
findi_normalize	128497758
findi	128526875
addzi	276720114
addmulzii	582697838

Generated by: LCOV version 1.16