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 30831-19b50a36d0) Lines: 1612 1786 90.3 % Date: 2026-04-22 09:25:48 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	29329
hnf_i	62114
ZM_snfall	64237
ZM_hnf	89938
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117165
ZM_hnfmod	162600
hnfspec_i	186369
hnf_divscale	197494
ZV_snfclean	227088
hnf_invscale	275324
hnffinal	303534
ZM_rowrankprofile	303535
ZM_hnflll	309050
ZV_snf_group	316937
ZV_snfall	316937
ZV_allequal	322716
remove_0cols	336148
hnfmodid	438498
allhnfmod	438512
hnf_solve	461151
ZpM_echelon	528215
hnf_invimage	547517
count2	554408
negcmpii	602522
reverse_rows	618052
ZM_hnfall_i	752600
ZM_snf_group	764386
hnfmerge_get_1	815967
update	841948
ZM_snfall_i	848091
bezout_step	890600
reduce1	991087
ZMrow_divexact_inplace	1070800
ZM_snfclean	1081407
snf_group	1081415
snf_pile	1123502
ZM_snf_no_divide	1301794
ZM_redpart	1689700
Minus	2994401
FpM_echelon	3364112
ZM_hnfmodprime	3364122
FpM_hnfend	3364408
col_mul	3367704
col_dup	3769269
ZM_reduce	4468669
ZM_hnfmodid	4537297
zlm_echelon	4802302
ZM_hnfmodall	5140213
optimal_D	5189361
ZM_hnfmodall_i	5191346
FpV_Fp_mul_part_ip	5411957
must_swap	6180388
subzi	7907452
count	10215568
hnfswap	11605802
ZC_lincomb1z	29890264
ZC_lincomb1z_i	29911385
FpV_red_part_ipvec	37722863
ZC_elem	41250231
affii2_or_copy_gc	54230447
reduce2	64252088
findi_normalize	128575051
findi	128598956
addzi	276992324
addmulzii	583004559

Generated by: LCOV version 1.16