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 30822-5d69697d32) Lines: 1610 1786 90.1 % Date: 2026-04-17 09:24:44 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	25158
ZM_hnfall	29370
hnf_i	62151
ZM_snfall	64239
ZM_hnf	90016
ZV_extgcd	110572
ZV_gcdext_i	111272
hnfadd_i	117286
ZM_hnfmod	162602
hnfspec_i	186364
hnf_divscale	197497
ZV_snfclean	227088
hnf_invscale	275322
ZM_rowrankprofile	303650
hnffinal	303652
ZM_hnflll	309167
ZV_snf_group	316912
ZV_snfall	316936
ZV_allequal	322709
remove_0cols	336227
hnfmodid	438499
allhnfmod	438512
hnf_solve	461163
ZpM_echelon	528205
hnf_invimage	547535
count2	554509
negcmpii	602520
reverse_rows	618282
ZM_hnfall_i	752641
ZM_snf_group	764406
hnfmerge_get_1	815969
update	841971
ZM_snfall_i	848115
bezout_step	890605
reduce1	991087
ZMrow_divexact_inplace	1070834
ZM_snfclean	1081389
snf_group	1081389
snf_pile	1123478
ZM_snf_no_divide	1301798
ZM_redpart	1689807
Minus	2995131
ZM_hnfmodprime	3364139
FpM_echelon	3364147
FpM_hnfend	3364382
col_mul	3367797
col_dup	3769081
ZM_reduce	4475302
ZM_hnfmodid	4537554
zlm_echelon	4802246
ZM_hnfmodall	5140498
optimal_D	5189749
ZM_hnfmodall_i	5191604
FpV_Fp_mul_part_ip	5411988
must_swap	6183346
subzi	7912104
count	10216035
hnfswap	11612010
ZC_lincomb1z	29910154
ZC_lincomb1z_i	29926115
FpV_red_part_ipvec	37727145
ZC_elem	41263389
affii2_or_copy_gc	54253823
reduce2	64292133
findi_normalize	128640999
findi	128670288
addzi	277299321
addmulzii	583562564

Generated by: LCOV version 1.16