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 30759-17b423fb9b) Lines: 1610 1786 90.1 % Date: 2026-03-20 09:26:27 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	25170
ZM_hnfall	29349
hnf_i	62124
ZM_snfall	64238
ZM_hnf	89968
ZV_extgcd	110572
ZV_gcdext_i	110586
hnfadd_i	117358
ZM_hnfmod	162600
hnfspec_i	186361
hnf_divscale	197496
ZV_snfclean	227086
hnf_invscale	275325
ZM_rowrankprofile	303714
hnffinal	303721
ZM_hnflll	309236
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322718
remove_0cols	336183
hnfmodid	438495
allhnfmod	438509
hnf_solve	461167
ZpM_echelon	528227
hnf_invimage	547530
count2	554708
negcmpii	602520
reverse_rows	618419
ZM_hnfall_i	752625
ZM_snf_group	764403
hnfmerge_get_1	815971
update	841909
ZM_snfall_i	848111
bezout_step	890557
reduce1	967385
ZMrow_divexact_inplace	1070798
ZM_snfclean	1081396
snf_group	1081398
snf_pile	1123506
ZM_snf_no_divide	1301816
ZM_redpart	1689943
Minus	2994806
ZM_hnfmodprime	3364162
FpM_echelon	3364165
FpM_hnfend	3364216
col_mul	3367547
col_dup	3769205
ZM_reduce	4474452
ZM_hnfmodid	4537570
zlm_echelon	4802308
ZM_hnfmodall	5140520
optimal_D	5189783
ZM_hnfmodall_i	5191616
FpV_Fp_mul_part_ip	5412090
must_swap	6176599
subzi	7911538
count	10216981
hnfswap	11608344
ZC_lincomb1z	29926867
ZC_lincomb1z_i	29944030
FpV_red_part_ipvec	37728843
ZC_elem	41267178
affii2_or_copy_gc	54280582
reduce2	64314399
findi_normalize	128659003
findi	128677343
addzi	277625337
addmulzii	583679711

Generated by: LCOV version 1.16