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 30809-023acc7158) Lines: 461 529 87.1 %
Date: 2026-04-13 09:26:12 Functions: 40 42 95.2 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
maxprime_check 0
set_optimize 0
u_forprime_restrict 63
forcomposite 70
forcomposite_init 70
maxprimeN 196
forcomposite_next 238
forprime_init 1315
forprime 1323
forprimestep 1449
ZV_copy_alloc 1887
ZV_size 1887
good_arena_size 1887
initprimes 1887
initprimes0 1887
initprimes1 1887
initprimetable 1887
pari_close_primes 1887
pari_init_primes 1887
pari_sieve_init 1887
set_prodprimes 1887
synchronize_primelimits 1887
forprimestep_init 2784
sieve_chunk 7251
sieve_block 9167
arith_set 102080
prodprimes 1106980
prodprimeslim 1106980
init_modular_small 4680705
u_forprime_sieve_init 5739563
u_forprime_set_prime_table 8701720
optimize_chunk 9239200
sieve_init 9239209
init_modular_big 12007803
u_forprime_init 19433603
u_forprime_arith_init 19980606
u_forprime_sieve_arith_init 25720680
maxprime 36355694
forprime_next 45430031
maxprimelim 76320651
shift_cache 130509937
u_forprime_next 217252532

Generated by: LCOV version 1.16