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 30634-7c77b4d1a9) Lines: 643 707 90.9 %
Date: 2026-01-26 09:23:16 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
init_MR_Jaeschke 558
BLS_test 560
ispsp 991
BPSW_try_PL 1481
pl831 2734
isprimePL 2982
PL_certificate 3045
primecertPL 3066
primes_upto_zv 7056
MR_Jaeschke 7351
primes_interval_zv 14530
uisprime_101 16487
PRIMES_interval 21353
uisprime_661 28035
LucasMod 28430
islucaspsp 28430
Z_isanypower_nosmalldiv 40813
BPSW_psp_nosmalldiv 46599
is2psp 144994
_uispsp 289447
pari_set_primetab 373183
uispsp 401358
primepi_upper_bound 404890
iu_coprime 438972
get_disc 1136571
uislucaspsp_pre 1136579
u_LucasMod_pre 1136751
BPSW_isprime 3930086
BPSW_isprime_small 3950523
_uisprime 8619903
uispsp_pre 8625183
uprimepi 9081725
gisprime 36968227
isprime 37666316
BPSW_psp 48368730
PRIMES_search 56799869
uisprime 74462794

Generated by: LCOV version 1.16