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 30766-abc2a9856c) Lines: 1610 1786 90.1 % Date: 2026-03-27 09:27:04 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	25167
ZM_hnfall	29302
hnf_i	62094
ZM_snfall	64239
ZM_hnf	89891
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117369
ZM_hnfmod	162602
hnfspec_i	186349
hnf_divscale	197484
ZV_snfclean	227091
hnf_invscale	275327
hnffinal	303720
ZM_rowrankprofile	303722
ZM_hnflll	309235
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322713
remove_0cols	336118
hnfmodid	438492
allhnfmod	438505
hnf_solve	461163
ZpM_echelon	528242
hnf_invimage	547532
count2	554911
negcmpii	602531
reverse_rows	618448
ZM_hnfall_i	752582
ZM_snf_group	764407
hnfmerge_get_1	815984
update	841726
ZM_snfall_i	848114
bezout_step	890396
reduce1	967385
ZMrow_divexact_inplace	1070773
ZM_snfclean	1081392
snf_group	1081403
snf_pile	1123492
ZM_snf_no_divide	1301730
ZM_redpart	1689626
Minus	2995988
ZM_hnfmodprime	3364166
FpM_echelon	3364300
FpM_hnfend	3364431
col_mul	3366933
col_dup	3768981
ZM_reduce	4468471
ZM_hnfmodid	4537645
zlm_echelon	4802501
ZM_hnfmodall	5140588
optimal_D	5189883
ZM_hnfmodall_i	5191687
FpV_Fp_mul_part_ip	5412203
must_swap	6176338
subzi	7909456
count	10215501
hnfswap	11613025
ZC_lincomb1z	29951024
ZC_lincomb1z_i	29960360
FpV_red_part_ipvec	37730391
ZC_elem	41255825
affii2_or_copy_gc	54317492
reduce2	64344045
findi_normalize	128709581
findi	128738394
addzi	278943964
addmulzii	584900190

Generated by: LCOV version 1.16