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 - bb_group.c (source / functions) Coverage Total Hit
Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.0 % 586 551
Test Date: 2026-11-12 17:03:01 Functions: 100.0 % 37 37
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
d2_multiple 146671
gen_PH_log 5021993
gen_Pollard_log 49
gen_Shanks 768407
gen_Shanks_init 763031
gen_Shanks_log 1548899
gen_Shanks_sqrtl 88640
gen_Shanks_sqrtn 91354
gen_ellgens 2716
gen_ellgroup 146832
gen_factored_order 5488
gen_gener 15883
gen_lgener 124263
gen_order 4418687
gen_plog 6088337
gen_pow 12042912
gen_pow_fold 534899
gen_pow_fold_i 687563
gen_pow_i 38221758
gen_pow_init 147
gen_pow_table 53327
gen_powers 28567695
gen_powu 215971
gen_powu_fold 215446
gen_powu_fold_i 1273494
gen_powu_i 110064188
gen_product 62385348
gen_select_order 973
get_arith_Z 1425272
get_arith_ZZM 11845363
int_block 8051933
iter_rho 63188577
leftright_binary_powu 97573278
producttree_scheme 59875043
rec_order 13153402
sliding_window_pow 221107
sliding_window_powu 9353136

Generated by: LCOV version 2.0-1