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) Coverage Total Hit
Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 84.8 % 323 274
Test Date: 2026-07-22 22:45:42 Functions: 83.3 % 30 25
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function 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 1275
E_any_torsion 1495
E_3_torsion 2038
Fl_inv4 2038
E_5_torsion 2238
E_2_torsion 3120
Fl_inv3 5158
E_7_torsion 14513
E_9_torsion 14565
a1a3_to_a4a6 14910
a2a4_to_a4a6 36916
E_8_torsion 37626
E_10_torsion 71032
E_12_torsion 88640
E_11_torsion 115902
map_X1_points 572969
E_general_X1 573047
get_X1_info 573066
random_curves_with_m_torsion 923691
torsion_compatible_with_characteristic 923771
rs_to_a4a6_and_tors 2345553
bc_to_a4a6_and_tors 3304077
bc_to_a4a6 3304083
Fl_mul4 6871354

Generated by: LCOV version 2.0-1