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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 91.1 % 707 644 Test Date: 2026-08-01 17:02:16 Functions: 92.2 % 77 71 Legend: Lines:     hit not hit

Function Name	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	1482
pl831	2734
isprimePL	2982
PL_certificate	3045
primecertPL	3066
primes_upto_zv	7168
MR_Jaeschke	7399
primes_interval_zv	14527
uisprime_101	16487
PRIMES_interval	21462
LucasMod	28504
islucaspsp	28504
uisprime_661	29956
Z_isanypower_nosmalldiv	40848
BPSW_psp_nosmalldiv	46723
is2psp	145109
_uispsp	311542
pari_set_primetab	378631
uispsp	434463
iu_coprime	439021
primepi_upper_bound	457609
get_disc	1154998
u_LucasMod_pre	1154998
uislucaspsp_pre	1154998
BPSW_isprime	1887470
BPSW_isprime_small	1907329
_uisprime	8819835
uispsp_pre	8825078
uprimepi	8862618
gisprime	13930035
isprime	14670597
BPSW_psp	25371966
PRIMES_search	45549081
uisprime	51981497

Generated by: LCOV version 2.0-1