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) Coverage Total Hit
Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 87.1 % 529 461
Test Date: 2026-08-09 17:02:52 Functions: 95.2 % 42 40
Legend: Lines:     hit not hit

Function Name Sort by function name Hit count Sort by function hit count
ZV_copy_alloc 1887
ZV_size 1887
arith_set 102080
forcomposite 70
forcomposite_init 70
forcomposite_next 238
forprime 1330
forprime_init 1315
forprime_next 47915151
forprimestep 1456
forprimestep_init 2791
good_arena_size 1887
init_modular_big 12020751
init_modular_small 4278506
initprimes 1887
initprimes0 1887
initprimes1 1887
initprimetable 1887
maxprime 36503567
maxprimeN 196
maxprime_check 0
maxprimelim 64065955
optimize_chunk 8843704
pari_close_primes 1887
pari_init_primes 1887
pari_sieve_init 1887
prodprimes 1106513
prodprimeslim 1106513
set_optimize 0
set_prodprimes 1887
shift_cache 132648053
sieve_block 9242
sieve_chunk 7251
sieve_init 8843704
synchronize_primelimits 1887
u_forprime_arith_init 20140093
u_forprime_init 19593185
u_forprime_next 219769764
u_forprime_restrict 63
u_forprime_set_prime_table 8847528
u_forprime_sieve_arith_init 25534759
u_forprime_sieve_init 5394666

Generated by: LCOV version 2.0-1