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 - language - forprime.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30818-1d7bcd2a3c) Lines: 461 529 87.1 %
Date: 2026-04-16 09:26:05 Functions: 40 42 95.2 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
ZV_copy_alloc 1887
ZV_size 1887
arith_set 102080
forcomposite 70
forcomposite_init 70
forcomposite_next 238
forprime 1323
forprime_init 1315
forprime_next 45430031
forprimestep 1449
forprimestep_init 2784
good_arena_size 1887
init_modular_big 12007587
init_modular_small 4680736
initprimes 1887
initprimes0 1887
initprimes1 1887
initprimetable 1887
maxprime 36355484
maxprimeN 196
maxprime_check 0
maxprimelim 76392445
optimize_chunk 9239185
pari_close_primes 1887
pari_init_primes 1887
pari_sieve_init 1887
prodprimes 1106962
prodprimeslim 1106962
set_optimize 0
set_prodprimes 1887
shift_cache 130510005
sieve_block 9167
sieve_chunk 7251
sieve_init 9239187
synchronize_primelimits 1887
u_forprime_arith_init 19982209
u_forprime_init 19438176
u_forprime_next 217239588
u_forprime_restrict 63
u_forprime_set_prime_table 8700846
u_forprime_sieve_arith_init 25721706
u_forprime_sieve_init 5739604

Generated by: LCOV version 1.16