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 30616-7aa4fb0184) Lines: 1603 1779 90.1 % Date: 2026-01-18 09:22:29 Functions: 96 106 90.6 % 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
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	25165
ZM_hnfall	29344
hnf_i	61726
ZM_snfall	64190
ZM_hnf	89565
hnfadd_i	92566
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfspec_i	134577
ZM_hnfmod	162553
hnf_divscale	197483
ZV_snfclean	227092
ZM_rowrankprofile	227142
hnffinal	227145
ZM_hnflll	232675
hnf_invscale	275321
ZV_snfall	316792
ZV_snf_group	316793
ZV_allequal	322717
remove_0cols	335800
count2	421055
hnfmodid	438103
allhnfmod	438117
hnf_solve	461147
reverse_rows	465331
ZpM_echelon	528153
hnf_invimage	547521
negcmpii	602153
ZM_snf_group	712617
ZM_hnfall_i	752616
update	771747
ZM_snfall_i	796275
hnfmerge_get_1	815968
bezout_step	820405
reduce1	967385
ZMrow_divexact_inplace	976413
ZM_snfclean	1029516
snf_group	1029517
snf_pile	1071637
ZM_snf_no_divide	1235331
ZM_redpart	1551858
Minus	2055710
col_dup	2614845
col_mul	3086917
ZM_hnfmodprime	3364155
FpM_echelon	3364170
FpM_hnfend	3364350
ZM_reduce	4472493
ZM_hnfmodid	4536482
must_swap	4618723
zlm_echelon	4801505
ZM_hnfmodall	5138972
optimal_D	5188055
ZM_hnfmodall_i	5190081
FpV_Fp_mul_part_ip	5411477
subzi	6469107
count	8161043
hnfswap	8497559
ZC_lincomb1z	21861183
ZC_lincomb1z_i	21870697
FpV_red_part_ipvec	37705021
ZC_elem	41201172
affii2_or_copy_gc	47956662
reduce2	53143269
findi_normalize	106310748
findi	106328011
addzi	239470549
addmulzii	519192033

Generated by: LCOV version 1.16