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 30824-18397de1d0) Lines: 1610 1786 90.1 % Date: 2026-04-19 09:25:48 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364188
FpM_hnfend	3364356
FpV_Fp_mul_part_ip	5411891
FpV_red_part_ipvec	37719253
Minus	2994792
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41257250
ZC_lincomb1z	29896306
ZC_lincomb1z_i	29918757
ZM_hnf	89966
ZM_hnf_knapsack	238
ZM_hnfall	29338
ZM_hnfall_i	752618
ZM_hnfcenter	25168
ZM_hnfintersectmod	28
ZM_hnflll	309095
ZM_hnfmod	162600
ZM_hnfmodall	5139967
ZM_hnfmodall_i	5191085
ZM_hnfmodid	4537082
ZM_hnfmodprime	3364183
ZM_hnfperm	385
ZM_redpart	1689976
ZM_reduce	4475230
ZM_rowrankprofile	303577
ZM_snf	15925
ZM_snf_group	764408
ZM_snf_no_divide	1301857
ZM_snfall	64239
ZM_snfall_i	848117
ZM_snfclean	1081391
ZMrow_divexact_inplace	1070793
ZV_allequal	322714
ZV_extgcd	110572
ZV_gcdext_i	111272
ZV_hnfgcdext	707
ZV_snf_group	316940
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316940
ZV_snfclean	227095
ZpM_echelon	528216
addmulzii	582788858
addzi	276720395
affii2_or_copy_gc	54227121
allhnfmod	438509
bezout_step	890672
col_dup	3769122
col_mul	3368000
count	10216276
count2	554612
do_zero	0
findi	128626610
findi_normalize	128600037
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197487
hnf_i	62133
hnf_invimage	547525
hnf_invscale	275321
hnf_solve	461152
hnfadd	0
hnfadd_i	117216
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303579
hnflll	7
hnfmerge_get_1	815986
hnfmod	14
hnfmodid	438495
hnfperm	14
hnfspec	0
hnfspec_i	186359
hnfswap	11607797
is_RgX	2590
mathnf0	973
mathnfspec	0
matsnf0	469
must_swap	6182125
negcmpii	602524
normalize_as_RgX	364
optimal_D	5189089
p_mat	0
reduce1	991087
reduce2	64263882
remove_0cols	336186
reverse_rows	618148
smith	385
smithall	35
smithclean	693
snf_group	1081391
snf_pile	1123488
snf_pile1	48
snfrank	154
subzi	7911073
trivsmith	0
update	842013
zlm_echelon	4802309
zv_snf_rank	0

Generated by: LCOV version 1.16