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 30851-7844d7b3a5) Lines: 1610 1786 90.1 % Date: 2026-05-03 09:26:29 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	25171
ZM_hnfall	29380
hnf_i	62503
ZM_snfall	64238
ZM_hnf	90378
ZV_extgcd	110572
ZV_gcdext_i	111776
hnfadd_i	117379
ZM_hnfmod	162607
hnfspec_i	186362
hnf_divscale	197516
ZV_snfclean	227091
hnf_invscale	275320
hnffinal	303741
ZM_rowrankprofile	303743
ZM_hnflll	309255
ZV_snf_group	316931
ZV_snfall	316931
ZV_allequal	322716
remove_0cols	336595
hnfmodid	438519
allhnfmod	438533
hnf_solve	461164
ZpM_echelon	528228
hnf_invimage	547539
count2	554531
negcmpii	602515
reverse_rows	618483
ZM_hnfall_i	752657
ZM_snf_group	764364
hnfmerge_get_1	815980
update	841732
ZM_snfall_i	848073
bezout_step	890383
reduce1	1013907
ZMrow_divexact_inplace	1070800
ZM_snfclean	1081406
snf_group	1081410
snf_pile	1123470
ZM_snf_no_divide	1301677
ZM_redpart	1689314
Minus	2995957
ZM_hnfmodprime	3364228
FpM_echelon	3364241
FpM_hnfend	3364486
col_mul	3366811
col_dup	3769211
ZM_reduce	4477444
ZM_hnfmodid	4537755
zlm_echelon	4802390
ZM_hnfmodall	5140694
optimal_D	5189883
ZM_hnfmodall_i	5191812
FpV_Fp_mul_part_ip	5411959
must_swap	6190549
subzi	7908632
count	10217932
hnfswap	11617280
ZC_lincomb1z	29908274
ZC_lincomb1z_i	29930363
FpV_red_part_ipvec	37723969
ZC_elem	41262615
affii2_or_copy_gc	54241724
reduce2	64294647
findi_normalize	128650791
findi	128667606
addzi	277175299
addmulzii	583221557

Generated by: LCOV version 1.16