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 30842-de08e65e1b) Lines: 1610 1786 90.1 % Date: 2026-04-29 09:26:11 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364151
FpM_hnfend	3364411
FpV_Fp_mul_part_ip	5411947
FpV_red_part_ipvec	37716650
Minus	2994054
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41252217
ZC_lincomb1z	29892138
ZC_lincomb1z_i	29919390
ZM_hnf	90295
ZM_hnf_knapsack	238
ZM_hnfall	29346
ZM_hnfall_i	752621
ZM_hnfcenter	25172
ZM_hnfintersectmod	28
ZM_hnflll	309054
ZM_hnfmod	162609
ZM_hnfmodall	5140110
ZM_hnfmodall_i	5191227
ZM_hnfmodid	4537145
ZM_hnfmodprime	3364163
ZM_hnfperm	385
ZM_redpart	1689673
ZM_reduce	4473319
ZM_rowrankprofile	303540
ZM_snf	15925
ZM_snf_group	764342
ZM_snf_no_divide	1301753
ZM_snfall	64239
ZM_snfall_i	848057
ZM_snfclean	1081390
ZMrow_divexact_inplace	1070723
ZV_allequal	322710
ZV_extgcd	110572
ZV_gcdext_i	111776
ZV_hnfgcdext	1211
ZV_snf_group	316941
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316941
ZV_snfclean	227087
ZpM_echelon	528226
addmulzii	582949513
addzi	276824830
affii2_or_copy_gc	54230827
allhnfmod	438541
bezout_step	890541
col_dup	3769041
col_mul	3367524
count	10215698
count2	554473
do_zero	0
findi	128617999
findi_normalize	128592512
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197511
hnf_i	62454
hnf_invimage	547533
hnf_invscale	275325
hnf_solve	461150
hnfadd	0
hnfadd_i	117187
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303540
hnflll	7
hnfmerge_get_1	815984
hnfmod	14
hnfmodid	438526
hnfperm	14
hnfspec	0
hnfspec_i	186354
hnfswap	11613982
is_RgX	2590
mathnf0	1477
mathnfspec	0
matsnf0	469
must_swap	6186701
negcmpii	602522
normalize_as_RgX	364
optimal_D	5189294
p_mat	0
reduce1	1013907
reduce2	64263681
remove_0cols	336510
reverse_rows	618055
smith	385
smithall	35
smithclean	693
snf_group	1081396
snf_pile	1123483
snf_pile1	48
snfrank	154
subzi	7908257
trivsmith	0
update	841899
zlm_echelon	4802279
zv_snf_rank	0

Generated by: LCOV version 1.16