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 30786-ffec283a2b) Lines: 274 323 84.8 %
Date: 2026-04-08 09:25:27 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 1228
E_any_torsion 1505
E_3_torsion 2032
Fl_inv4 2032
E_5_torsion 2165
E_2_torsion 3115
Fl_inv3 5147
E_7_torsion 14500
E_9_torsion 14523
a1a3_to_a4a6 14711
E_8_torsion 36952
a2a4_to_a4a6 37027
E_10_torsion 70875
E_12_torsion 87939
E_11_torsion 115593
map_X1_points 565545
get_X1_info 565620
E_general_X1 565631
random_curves_with_m_torsion 914114
torsion_compatible_with_characteristic 914193
rs_to_a4a6_and_tors 2276319
bc_to_a4a6_and_tors 3194856
bc_to_a4a6 3194890
Fl_mul4 6632835

Generated by: LCOV version 1.16