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 30818-1d7bcd2a3c) Lines: 1610 1786 90.1 % Date: 2026-04-16 09:26:05 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
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
normalize_as_RgX	364
ZM_hnfperm	385
smith	385
matsnf0	469
RgC_elem	511
smithclean	693
ZV_hnfgcdext	707
gbezout_step	882
mathnf0	973
is_RgX	2590
ZM_snf	15925
ZM_hnfcenter	25171
ZM_hnfall	29367
hnf_i	62137
ZM_snfall	64239
ZM_hnf	89999
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117490
ZM_hnfmod	162598
hnfspec_i	186360
hnf_divscale	197484
ZV_snfclean	227088
hnf_invscale	275319
ZM_rowrankprofile	303849
hnffinal	303851
ZM_hnflll	309360
ZV_snf_group	316938
ZV_snfall	316938
ZV_allequal	322716
remove_0cols	336217
hnfmodid	438486
allhnfmod	438499
hnf_solve	461149
ZpM_echelon	528228
hnf_invimage	547521
count2	554917
negcmpii	602525
reverse_rows	618696
ZM_hnfall_i	752642
ZM_snf_group	764379
hnfmerge_get_1	815963
update	841919
ZM_snfall_i	848093
bezout_step	890575
reduce1	991087
ZMrow_divexact_inplace	1070774
ZM_snfclean	1081387
snf_group	1081391
snf_pile	1123497
ZM_snf_no_divide	1301828
ZM_redpart	1689860
Minus	2996089
FpM_echelon	3363940
ZM_hnfmodprime	3364116
FpM_hnfend	3364392
col_mul	3367578
col_dup	3769117
ZM_reduce	4473915
ZM_hnfmodid	4537259
zlm_echelon	4802297
ZM_hnfmodall	5140181
optimal_D	5189455
ZM_hnfmodall_i	5191303
FpV_Fp_mul_part_ip	5411978
must_swap	6184164
subzi	7912141
count	10214028
hnfswap	11613243
ZC_lincomb1z	29905700
ZC_lincomb1z_i	29926344
FpV_red_part_ipvec	37720599
ZC_elem	41255144
affii2_or_copy_gc	54236082
reduce2	64281148
findi_normalize	128632498
findi	128657067
addzi	276926614
addmulzii	583029385

Generated by: LCOV version 1.16