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 30824-18397de1d0) Lines: 1610 1786 90.1 % Date: 2026-04-18 09:26:04 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	29349
hnf_i	62140
ZM_snfall	64237
ZM_hnf	89984
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117521
ZM_hnfmod	162602
hnfspec_i	186354
hnf_divscale	197486
ZV_snfclean	227095
hnf_invscale	275323
ZM_rowrankprofile	303875
hnffinal	303877
ZM_hnflll	309387
ZV_snf_group	316940
ZV_snfall	316940
ZV_allequal	322712
remove_0cols	336192
hnfmodid	438492
allhnfmod	438506
hnf_solve	461168
ZpM_echelon	528221
hnf_invimage	547534
count2	554756
negcmpii	602518
reverse_rows	618738
ZM_hnfall_i	752622
ZM_snf_group	764368
hnfmerge_get_1	815972
update	841984
ZM_snfall_i	848080
bezout_step	890637
reduce1	991087
ZMrow_divexact_inplace	1070764
ZM_snfclean	1081373
snf_group	1081378
snf_pile	1123469
ZM_snf_no_divide	1301830
ZM_redpart	1689864
Minus	2996753
ZM_hnfmodprime	3364212
FpM_echelon	3364213
FpM_hnfend	3364424
col_mul	3367790
col_dup	3769066
ZM_reduce	4474753
ZM_hnfmodid	4537210
zlm_echelon	4802343
ZM_hnfmodall	5140140
optimal_D	5189294
ZM_hnfmodall_i	5191275
FpV_Fp_mul_part_ip	5411950
must_swap	6185713
subzi	7915389
count	10218039
hnfswap	11615072
ZC_lincomb1z	29912031
ZC_lincomb1z_i	29933535
FpV_red_part_ipvec	37722536
ZC_elem	41257869
affii2_or_copy_gc	54244140
reduce2	64293470
findi_normalize	128659666
findi	128680897
addzi	277055194
addmulzii	583236973

Generated by: LCOV version 1.16