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 - volcano.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30786-ffec283a2b) Lines: 340 345 98.6 %
Date: 2026-04-08 09:25:27 Functions: 28 28 100.0 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Flm_Fl_polmodular_evalxy 550
Flx_remove_root 35751241
ascend_volcano 133420
common_nbr 242743
common_nbr_corner 37368
common_nbr_pred 43026
common_nbr_pred_poly 44116
common_nbr_verify 1089
descend_volcano 2905
enum_roots 231896
extend_path 292740
get_nbrs 26455815
is_j_exceptional 379125
j_level_in_volcano 216458
next_surface_nbr 155933
nhbr_polynomial 148519
node_degree 84300
pcp_get_L 231892
pcp_get_L0 231896
pcp_get_enum_cnt 231890
pcp_get_k 231890
pcp_get_n 231893
pcp_get_o 231892
random_distinct_neighbours_of 216780
surface_gcd_cycle 96990
surface_gcd_path 1072
surface_parallel_path 205393
surface_path 226604

Generated by: LCOV version 1.16