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 30703-cd958ce78c) Lines: 274 323 84.8 %
Date: 2026-02-23 09:22:43 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 594
E_4_torsion 1229
E_any_torsion 1505
E_3_torsion 2056
Fl_inv4 2056
E_5_torsion 2204
E_2_torsion 3141
Fl_inv3 5197
E_7_torsion 14367
E_9_torsion 14500
a1a3_to_a4a6 15087
E_8_torsion 37067
a2a4_to_a4a6 37507
E_10_torsion 70733
E_12_torsion 87951
E_11_torsion 114647
map_X1_points 566752
get_X1_info 566778
E_general_X1 566781
random_curves_with_m_torsion 914456
torsion_compatible_with_characteristic 914501
rs_to_a4a6_and_tors 2277231
bc_to_a4a6_and_tors 3196108
bc_to_a4a6 3196511
Fl_mul4 6637788

Generated by: LCOV version 1.16