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 30764-6b81f1f3fa) Lines: 1610 1786 90.1 % Date: 2026-03-26 09:27:02 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364291
FpM_hnfend	3364388
FpV_Fp_mul_part_ip	5412034
FpV_red_part_ipvec	37728526
Minus	2994666
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41264046
ZC_lincomb1z	29930728
ZC_lincomb1z_i	29947949
ZM_hnf	89967
ZM_hnf_knapsack	238
ZM_hnfall	29342
ZM_hnfall_i	752612
ZM_hnfcenter	25165
ZM_hnfintersectmod	28
ZM_hnflll	309199
ZM_hnfmod	162599
ZM_hnfmodall	5140497
ZM_hnfmodall_i	5191610
ZM_hnfmodid	4537563
ZM_hnfmodprime	3364249
ZM_hnfperm	385
ZM_redpart	1689797
ZM_reduce	4475063
ZM_rowrankprofile	303683
ZM_snf	15925
ZM_snf_group	764371
ZM_snf_no_divide	1301806
ZM_snfall	64237
ZM_snfall_i	848077
ZM_snfclean	1081375
ZMrow_divexact_inplace	1070765
ZV_allequal	322716
ZV_extgcd	110572
ZV_gcdext_i	110586
ZV_hnfgcdext	21
ZV_snf_group	316942
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316942
ZV_snfclean	227094
ZpM_echelon	528235
addmulzii	583666409
addzi	277854415
affii2_or_copy_gc	54278584
allhnfmod	438506
bezout_step	890583
col_dup	3769124
col_mul	3367649
count	10216784
count2	554820
do_zero	0
findi	128698914
findi_normalize	128670326
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197486
hnf_i	62130
hnf_invimage	547524
hnf_invscale	275323
hnf_solve	461147
hnfadd	0
hnfadd_i	117327
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303685
hnflll	7
hnfmerge_get_1	815995
hnfmod	14
hnfmodid	438492
hnfperm	14
hnfspec	0
hnfspec_i	186345
hnfswap	11610368
is_RgX	2590
mathnf0	287
mathnfspec	0
matsnf0	469
must_swap	6178322
negcmpii	602531
normalize_as_RgX	364
optimal_D	5189734
p_mat	0
reduce1	967385
reduce2	64317862
remove_0cols	336191
reverse_rows	618379
smith	385
smithall	35
smithclean	693
snf_group	1081400
snf_pile	1123490
snf_pile1	48
snfrank	154
subzi	7908540
trivsmith	0
update	841926
zlm_echelon	4802521
zv_snf_rank	0

Generated by: LCOV version 1.16