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 30786-ffec283a2b) Lines: 1610 1786 90.1 % Date: 2026-04-08 09:25:27 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	25165
ZM_hnfall	29343
hnf_i	62125
ZM_snfall	64239
ZM_hnf	89963
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117269
ZM_hnfmod	162602
hnfspec_i	186358
hnf_divscale	197491
ZV_snfclean	227085
hnf_invscale	275322
ZM_rowrankprofile	303632
hnffinal	303633
ZM_hnflll	309149
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322714
remove_0cols	336180
hnfmodid	438495
allhnfmod	438509
hnf_solve	461129
ZpM_echelon	528246
hnf_invimage	547514
count2	554535
negcmpii	602526
reverse_rows	618248
ZM_hnfall_i	752621
ZM_snf_group	764384
hnfmerge_get_1	815978
update	841930
ZM_snfall_i	848093
bezout_step	890585
reduce1	967385
ZMrow_divexact_inplace	1070801
ZM_snfclean	1081392
snf_group	1081397
snf_pile	1123480
ZM_snf_no_divide	1301887
ZM_redpart	1689915
Minus	2994069
FpM_echelon	3364177
ZM_hnfmodprime	3364191
FpM_hnfend	3364263
col_mul	3367626
col_dup	3769048
ZM_reduce	4473523
ZM_hnfmodid	4537449
zlm_echelon	4802368
ZM_hnfmodall	5140111
optimal_D	5189574
ZM_hnfmodall_i	5191530
FpV_Fp_mul_part_ip	5412123
must_swap	6172460
subzi	7906302
count	10213679
hnfswap	11598469
ZC_lincomb1z	29883709
ZC_lincomb1z_i	29908590
FpV_red_part_ipvec	37722599
ZC_elem	41256825
affii2_or_copy_gc	54214720
reduce2	64236240
findi_normalize	128538465
findi	128563188
addzi	276620585
addmulzii	582586666

Generated by: LCOV version 1.16