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 30849-48ff4d246c) Lines: 274 323 84.8 %
Date: 2026-05-01 09:26:53 Functions: 25 30 83.3 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
E_10_torsion 70985
E_11_torsion 115224
E_12_torsion 87780
E_2_torsion 3118
E_3_torsion 2066
E_4_torsion 1241
E_5_torsion 2162
E_6_torsion 594
E_7_torsion 14744
E_8_torsion 36286
E_9_torsion 14502
E_any_torsion 1505
E_general_X1 565553
Fl_div4 0
Fl_div8 0
Fl_inv3 5184
Fl_inv4 2066
Fl_mul4 6624252
a1a3_to_a4a6 14799
a2a4_to_a4a6 37069
bc_to_a4a6 3191998
bc_to_a4a6_and_tors 3191970
get_X1_info 565544
map_X1_points 565498
qt_to_a4a6_and_tors 0
random_curves_with_m_torsion 913102
rs_to_a4a6_and_tors 2274151
t_to_a4a6_and_tors 0
torsion_compatible_with_characteristic 913198
tq_to_a4a6_and_tors 0

Generated by: LCOV version 1.16