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 30772-246cd0a587) Lines: 1610 1786 90.1 % Date: 2026-03-28 09:27:57 Functions: 97 107 90.7 % Legend: Lines: hit not hit

Function Name	Hit count
FpM_echelon	3364280
FpM_hnfend	3364446
FpV_Fp_mul_part_ip	5411999
FpV_red_part_ipvec	37727741
Minus	2995782
RgC_elem	511
RgM_hnfall	42
RgM_reduce	84
RgXM_snf	49
ZC_elem	41252572
ZC_lincomb1z	29951791
ZC_lincomb1z_i	29969625
ZM_hnf	89875
ZM_hnf_knapsack	238
ZM_hnfall	29283
ZM_hnfall_i	752567
ZM_hnfcenter	25169
ZM_hnfintersectmod	28
ZM_hnflll	309251
ZM_hnfmod	162600
ZM_hnfmodall	5140269
ZM_hnfmodall_i	5191344
ZM_hnfmodid	4537289
ZM_hnfmodprime	3364201
ZM_hnfperm	385
ZM_redpart	1689862
ZM_reduce	4467168
ZM_rowrankprofile	303735
ZM_snf	15925
ZM_snf_group	764408
ZM_snf_no_divide	1301818
ZM_snfall	64239
ZM_snfall_i	848117
ZM_snfclean	1081385
ZMrow_divexact_inplace	1070824
ZV_allequal	322718
ZV_extgcd	110572
ZV_gcdext_i	110586
ZV_hnfgcdext	21
ZV_snf_group	316938
ZV_snf_rank	91
ZV_snf_rank_u	49
ZV_snf_trunc	0
ZV_snfall	316938
ZV_snfclean	227095
ZpM_echelon	528220
addmulzii	584518948
addzi	278519619
affii2_or_copy_gc	54307966
allhnfmod	438506
bezout_step	890527
col_dup	3769110
col_mul	3367427
count	10217136
count2	554723
do_zero	0
findi	128733407
findi_normalize	128709682
gbezout_step	882
gsmith	0
gsmithall	0
gsnf_no_divide	196
hnf	14
hnf_divscale	197487
hnf_i	62097
hnf_invimage	547518
hnf_invscale	275328
hnf_solve	461154
hnfadd	0
hnfadd_i	117375
hnfall	14
hnfallgen	21
hnfdivide	133
hnffinal	303736
hnflll	7
hnfmerge_get_1	815996
hnfmod	14
hnfmodid	438492
hnfperm	14
hnfspec	0
hnfspec_i	186360
hnfswap	11615857
is_RgX	2590
mathnf0	287
mathnfspec	0
matsnf0	469
must_swap	6179276
negcmpii	602518
normalize_as_RgX	364
optimal_D	5189415
p_mat	0
reduce1	967385
reduce2	64338474
remove_0cols	336104
reverse_rows	618474
smith	385
smithall	35
smithclean	693
snf_group	1081411
snf_pile	1123509
snf_pile1	48
snfrank	154
subzi	7911740
trivsmith	0
update	841865
zlm_echelon	4802429
zv_snf_rank	0

Generated by: LCOV version 1.16