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 - prime.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30835-e55edf4b45) Lines: 644 707 91.1 %
Date: 2026-04-24 09:27:20 Functions: 71 77 92.2 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
is_2_prp_101 0
ispseudoprime 0
primecert 0
uis2psp 0
uislucaspsp 0
uprime 0
gprimepi_lower_bound 1
gprimepi_upper_bound 1
gispseudoprime 14
primepi_lower_bound 14
cleanprimetab 21
millerrabin 28
removeprimes 28
rmprime 28
rmprimes 28
_isprimePL 42
primecertexport 49
addp_union 56
check_ecppcert 56
prime_successor 56
primecertisvalid 56
primes_interval_i 79
PL_isvalid 84
primecert0 84
primes_zv 91
randomprime 91
prime_table_closest_p 97
cert_type 98
primes 105
prime_interval 147
randomprime0 154
addp 189
addprimes 189
primes0 238
primes_interval 238
primepi 252
prime_table_find_n 273
prime 280
check_ecppcertentry 392
PL_certify 531
BLS_test 560
init_MR_Jaeschke 585
ispsp 1042
BPSW_try_PL 1481
pl831 2734
isprimePL 2982
PL_certificate 3045
primecertPL 3066
primes_upto_zv 7056
MR_Jaeschke 7399
primes_interval_zv 14527
uisprime_101 16487
PRIMES_interval 21350
LucasMod 28505
islucaspsp 28505
uisprime_661 29949
Z_isanypower_nosmalldiv 40823
BPSW_psp_nosmalldiv 46700
is2psp 145064
_uispsp 293251
pari_set_primetab 372835
uispsp 405162
iu_coprime 439014
primepi_upper_bound 457372
get_disc 1136577
uislucaspsp_pre 1136584
u_LucasMod_pre 1136806
BPSW_isprime 3944252
BPSW_isprime_small 3964799
_uisprime 8621857
uispsp_pre 8625458
uprimepi 9258007
gisprime 37212477
isprime 37928297
BPSW_psp 48638355
PRIMES_search 57190601
uisprime 74729247

Generated by: LCOV version 1.16