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 30773-2078653b96) Lines: 643 664 96.8 %
Date: 2026-04-01 09:27:34 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 798714
get_Fp_hermite 970350
mkopU 977669
gen_howell_i 1070302
gen_zeromat 1803363
mkopmul 2182743
_Fp_lquo 2393394
_Fp_rann 2405788
gen_matmul_hermite 2714895
mkoptransv 3217155
gen_zerocol 3373993
_Fp_extgcd 3894788
gen_elem 3983626
gen_addrightmul 4467846
gen_is_zerocol 4726660
_Fp_neg 5039913
gen_addcol 5916139
_Fp_unit 7574714
gen_rightlincomb 7967243
gen_leftapply 15435954
_Fp_s 16037179
gen_redcol 18790246
gen_rightmulcol 20963981
_Fp_equal1 30828439
_Fp_add 40659021
_Fp_mul 48438586
_Fp_red 49959046
_Fp_equal0 108186413

Generated by: LCOV version 1.16