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: 1612 1786 90.3 % Date: 2026-05-05 09:26:54 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	29333
hnf_i	62507
ZM_snfall	64246
ZM_hnf	90335
ZV_extgcd	110579
ZV_gcdext_i	111783
hnfadd_i	117230
ZM_hnfmod	162637
hnfspec_i	186365
hnf_divscale	197516
ZV_snfclean	227084
hnf_invscale	275325
ZM_rowrankprofile	303600
hnffinal	303600
ZM_hnflll	309116
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322719
remove_0cols	336545
hnfmodid	438525
allhnfmod	438539
hnf_solve	461152
ZpM_echelon	528226
hnf_invimage	547539
count2	554757
negcmpii	602520
reverse_rows	618186
ZM_hnfall_i	752608
ZM_snf_group	764407
hnfmerge_get_1	815987
update	841871
ZM_snfall_i	848122
bezout_step	890515
reduce1	1013921
ZMrow_divexact_inplace	1070771
ZM_snfclean	1081404
snf_group	1081413
snf_pile	1123482
ZM_snf_no_divide	1301766
ZM_redpart	1689626
Minus	2994610
FpM_echelon	3365704
ZM_hnfmodprime	3365727
FpM_hnfend	3365951
col_mul	3367405
col_dup	3769096
ZM_reduce	4475524
ZM_hnfmodid	4539066
zlm_echelon	4803776
ZM_hnfmodall	5142015
optimal_D	5191324
ZM_hnfmodall_i	5193131
FpV_Fp_mul_part_ip	5413483
must_swap	6189759
subzi	7910889
count	10215287
hnfswap	11615939
ZC_lincomb1z	29905197
ZC_lincomb1z_i	29927463
FpV_red_part_ipvec	37729503
ZC_elem	41263675
affii2_or_copy_gc	54227847
reduce2	64288137
findi_normalize	128641868
findi	128665953
addzi	277039524
addmulzii	583249891

Generated by: LCOV version 1.16