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: 2026-03-30 09:27:24 Functions: 53 55 96.4 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Z_split 28
Z_stab 28
_Fp_add 40656223
_Fp_equal0 108177668
_Fp_equal1 30826777
_Fp_extgcd 3894603
_Fp_lquo 2393394
_Fp_mul 48435314
_Fp_neg 5039789
_Fp_rann 2405736
_Fp_red 49955910
_Fp_s 16036292
_Fp_unit 7574403
gaussmodulo 0
gaussmodulo2 0
gaussmoduloall 77
gen_addcol 5915782
gen_addrightmul 4467722
gen_colei 371469
gen_detops 42
gen_elem 3983443
gen_howell 101780
gen_howell_i 1070299
gen_inv 712420
gen_is_inv 220794
gen_is_zerocol 4726586
gen_kernel 56154
gen_kernel_from_howell 100009
gen_kernel_howell 99932
gen_last_inv_diago 201712
gen_leftapply 15434510
gen_matid_hermite 56091
gen_matimage 157794
gen_matmul_hermite 2714512
gen_redcol 18789099
gen_reduce_mod_howell 43953
gen_rightapply 374465
gen_rightlincomb 7966874
gen_rightmulcol 20963002
gen_solve 43953
gen_solve_from_howell 43953
gen_zerocol 3373935
gen_zeromat 1803364
get_Fp_hermite 970334
matdetmod 84
matimagemod 157829
matinvmod 798693
matkermod 56189
matsolvemod 44156
matsolvemod_finite 43953
mkopU 977484
mkopmul 2182655
mkopswap 45843
mkoptransv 3216948
msolvemod0 77

Generated by: LCOV version 1.16