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 30660-09c6d0ed2e) Lines: 644 707 91.1 %
Date: 2026-02-03 09:23:21 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 1482
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 28433
islucaspsp 28433
Z_isanypower_nosmalldiv 40816
BPSW_psp_nosmalldiv 46603
is2psp 144970
_uispsp 289453
pari_set_primetab 373104
uispsp 401364
primepi_upper_bound 404889
iu_coprime 438965
get_disc 1136586
uislucaspsp_pre 1136596
u_LucasMod_pre 1136758
BPSW_isprime 3967207
BPSW_isprime_small 3987501
_uisprime 8620263
uispsp_pre 8625162
uprimepi 9079910
gisprime 37602316
isprime 38308322
BPSW_psp 49013644
PRIMES_search 57128740
uisprime 75109798

Generated by: LCOV version 1.16