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 - crvwtors.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30842-de08e65e1b) Lines: 274 323 84.8 %
Date: 2026-04-29 09:26:11 Functions: 25 30 83.3 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Fl_div4 0
Fl_div8 0
qt_to_a4a6_and_tors 0
t_to_a4a6_and_tors 0
tq_to_a4a6_and_tors 0
E_6_torsion 591
E_4_torsion 1215
E_any_torsion 1499
E_3_torsion 2043
Fl_inv4 2043
E_5_torsion 2134
E_2_torsion 3022
Fl_inv3 5065
E_9_torsion 14490
a1a3_to_a4a6 15008
E_7_torsion 15055
a2a4_to_a4a6 36550
E_8_torsion 37024
E_10_torsion 71153
E_12_torsion 86562
E_11_torsion 114672
map_X1_points 565641
E_general_X1 565657
get_X1_info 565714
random_curves_with_m_torsion 912481
torsion_compatible_with_characteristic 912578
rs_to_a4a6_and_tors 2274314
bc_to_a4a6_and_tors 3192424
bc_to_a4a6 3192488
Fl_mul4 6626544

Generated by: LCOV version 1.16