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:

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 - bb_hnf.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30802-b11b770002) Lines: 643 664 96.8 %
Date: 2026-04-12 09:26:48 Functions: 53 55 96.4 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
gaussmodulo 0
gaussmodulo2 0
Z_split 28
Z_stab 28
gen_detops 42
gaussmoduloall 77
msolvemod0 77
matdetmod 84
gen_reduce_mod_howell 43953
gen_solve 43953
gen_solve_from_howell 43953
matsolvemod_finite 43953
matsolvemod 44156
mkopswap 45843
gen_matid_hermite 56091
gen_kernel 56154
matkermod 56189
gen_kernel_howell 99932
gen_kernel_from_howell 100009
gen_howell 101780
gen_matimage 157794
matimagemod 157829
gen_last_inv_diago 201712
gen_is_inv 220794
gen_colei 371469
gen_rightapply 374465
gen_inv 712429
matinvmod 798680
get_Fp_hermite 970312
mkopU 977625
gen_howell_i 1070299
gen_zeromat 1803363
mkopmul 2182672
_Fp_lquo 2393394
_Fp_rann 2405751
gen_matmul_hermite 2714786
mkoptransv 3217043
gen_zerocol 3373946
_Fp_extgcd 3894743
gen_elem 3983584
gen_addrightmul 4467744
gen_is_zerocol 4726560
_Fp_neg 5039794
gen_addcol 5915958
_Fp_unit 7574344
gen_rightlincomb 7967151
gen_leftapply 15435227
_Fp_s 16036734
gen_redcol 18789658
gen_rightmulcol 20963541
_Fp_equal1 30827275
_Fp_add 40658041
_Fp_mul 48437458
_Fp_red 49957000
_Fp_equal0 108180887

Generated by: LCOV version 1.16