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 30835-e55edf4b45) Lines: 1610 1786 90.1 % Date: 2026-04-25 09:26:46 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364238
FpM_hnfend	3364376
FpV_Fp_mul_part_ip	5411985
FpV_red_part_ipvec	37719573
Minus	2994942
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41247408
ZC_lincomb1z	29891173
ZC_lincomb1z_i	29917300
ZM_hnf	89928
ZM_hnf_knapsack	238
ZM_hnfall	29330
ZM_hnfall_i	752604
ZM_hnfcenter	25175
ZM_hnfintersectmod	28
ZM_hnflll	309145
ZM_hnfmod	162602
ZM_hnfmodall	5140155
ZM_hnfmodall_i	5191287
ZM_hnfmodid	4537218
ZM_hnfmodprime	3364241
ZM_hnfperm	385
ZM_redpart	1689860
ZM_reduce	4466674
ZM_rowrankprofile	303631
ZM_snf	15925
ZM_snf_group	764380
ZM_snf_no_divide	1301832
ZM_snfall	64238
ZM_snfall_i	848086
ZM_snfclean	1081388
ZMrow_divexact_inplace	1070763
ZV_allequal	322712
ZV_extgcd	110572
ZV_gcdext_i	111272
ZV_hnfgcdext	707
ZV_snf_group	316936
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316935
ZV_snfclean	227090
ZpM_echelon	528219
addmulzii	583019056
addzi	276880957
affii2_or_copy_gc	54225569
allhnfmod	438512
bezout_step	890622
col_dup	3768849
col_mul	3367744
count	10214562
count2	554645
do_zero	0
findi	128621724
findi_normalize	128601727
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197498
hnf_i	62103
hnf_invimage	547538
hnf_invscale	275328
hnf_solve	461153
hnfadd	0
hnfadd_i	117282
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303631
hnflll	7
hnfmerge_get_1	815978
hnfmod	14
hnfmodid	438497
hnfperm	14
hnfspec	0
hnfspec_i	186349
hnfswap	11610376
is_RgX	2590
mathnf0	973
mathnfspec	0
matsnf0	469
must_swap	6182580
negcmpii	602520
normalize_as_RgX	364
optimal_D	5189248
p_mat	0
reduce1	991087
reduce2	64266282
remove_0cols	336146
reverse_rows	618256
smith	385
smithall	35
smithclean	693
snf_group	1081392
snf_pile	1123481
snf_pile1	48
snfrank	154
subzi	7906094
trivsmith	0
update	841954
zlm_echelon	4802377
zv_snf_rank	0

Generated by: LCOV version 1.16