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 30724-b49b12e983) Lines: 461 529 87.1 %
Date: 2026-03-02 09:24:58 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 1873
ZV_size 1873
arith_set 102080
forcomposite 70
forcomposite_init 70
forcomposite_next 238
forprime 973
forprime_init 1315
forprime_next 45413581
forprimestep 1099
forprimestep_init 2434
good_arena_size 1873
init_modular_big 12044008
init_modular_small 4678717
initprimes 1873
initprimes0 1873
initprimes1 1873
initprimetable 1873
maxprime 36383698
maxprimeN 196
maxprime_check 0
maxprimelim 76272353
optimize_chunk 9240875
pari_close_primes 1873
pari_init_primes 1873
pari_sieve_init 1873
prodprimes 1106895
prodprimeslim 1106895
set_optimize 0
set_prodprimes 1873
shift_cache 130537527
sieve_block 9153
sieve_chunk 7197
sieve_init 9240875
synchronize_primelimits 1873
u_forprime_arith_init 20012053
u_forprime_init 19465697
u_forprime_next 217114669
u_forprime_restrict 63
u_forprime_set_prime_table 8701249
u_forprime_sieve_arith_init 25755117
u_forprime_sieve_init 5742952

Generated by: LCOV version 1.16