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: 1610 1786 90.1 % Date: 2026-04-23 09:26:12 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	25170
ZM_hnfall	29312
hnf_i	62119
ZM_snfall	64237
ZM_hnf	89926
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117382
ZM_hnfmod	162601
hnfspec_i	186361
hnf_divscale	197487
ZV_snfclean	227091
hnf_invscale	275323
ZM_rowrankprofile	303745
hnffinal	303745
ZM_hnflll	309261
ZV_snfall	316936
ZV_snf_group	316937
ZV_allequal	322710
remove_0cols	336143
hnfmodid	438492
allhnfmod	438506
hnf_solve	461151
ZpM_echelon	528216
hnf_invimage	547515
count2	554929
negcmpii	602523
reverse_rows	618492
ZM_hnfall_i	752586
ZM_snf_group	764371
hnfmerge_get_1	815969
update	841921
ZM_snfall_i	848083
bezout_step	890586
reduce1	991087
ZMrow_divexact_inplace	1070781
ZM_snfclean	1081392
snf_group	1081392
snf_pile	1123483
ZM_snf_no_divide	1301803
ZM_redpart	1689762
Minus	2996822
FpM_echelon	3364119
ZM_hnfmodprime	3364208
FpM_hnfend	3364429
col_mul	3367594
col_dup	3769130
ZM_reduce	4468235
ZM_hnfmodid	4536947
zlm_echelon	4802306
ZM_hnfmodall	5139833
optimal_D	5189047
ZM_hnfmodall_i	5190963
FpV_Fp_mul_part_ip	5412096
must_swap	6185789
subzi	7911631
count	10216566
hnfswap	11616413
ZC_lincomb1z	29916648
ZC_lincomb1z_i	29936916
FpV_red_part_ipvec	37718182
ZC_elem	41246740
affii2_or_copy_gc	54266733
reduce2	64301911
findi_normalize	128668646
findi	128693888
addzi	277455712
addmulzii	583567031

Generated by: LCOV version 1.16