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 30640-c2c58e18c5) Lines: 644 707 91.1 %
Date: 2026-01-27 08:51:18 Functions: 71 77 92.2 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
BLS_test 560
BPSW_isprime 3947052
BPSW_isprime_small 3967223
BPSW_psp 48381653
BPSW_psp_nosmalldiv 46087
BPSW_try_PL 1482
LucasMod 28432
MR_Jaeschke 7351
PL_certificate 3045
PL_certify 531
PL_isvalid 84
PRIMES_interval 21353
PRIMES_search 55378648
Z_isanypower_nosmalldiv 39386
_isprimePL 42
_uisprime 8285334
_uispsp 289423
addp 189
addp_union 56
addprimes 189
cert_type 98
check_ecppcert 56
check_ecppcertentry 392
cleanprimetab 21
get_disc 1083581
gisprime 37365234
gispseudoprime 14
gprimepi_lower_bound 1
gprimepi_upper_bound 1
init_MR_Jaeschke 558
is2psp 144760
is_2_prp_101 0
islucaspsp 28432
isprime 38078779
isprimePL 2982
ispseudoprime 0
ispsp 991
iu_coprime 438965
millerrabin 28
pari_set_primetab 366267
pl831 2734
prime 280
prime_interval 147
prime_successor 56
prime_table_closest_p 97
prime_table_find_n 273
primecert 0
primecert0 84
primecertPL 3066
primecertexport 49
primecertisvalid 56
primepi 252
primepi_lower_bound 14
primepi_upper_bound 341842
primes 105
primes0 238
primes_interval 238
primes_interval_i 79
primes_interval_zv 14530
primes_upto_zv 7056
primes_zv 91
randomprime 91
randomprime0 154
removeprimes 28
rmprime 28
rmprimes 28
u_LucasMod_pre 1083801
uis2psp 0
uislucaspsp 0
uislucaspsp_pre 1083580
uisprime 73885339
uisprime_101 16487
uisprime_661 27733
uispsp 401334
uispsp_pre 8290628
uprime 0
uprimepi 8304635

Generated by: LCOV version 1.16