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 v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 90.9 % 707 643 Test Date: 2026-07-23 17:04:59 Functions: 92.2 % 77 71 Legend: Lines:     hit not hit

Function Name	Hit count
BLS_test	560
BPSW_isprime	1883720
BPSW_isprime_small	1903579
BPSW_psp	25327717
BPSW_psp_nosmalldiv	46711
BPSW_try_PL	1482
LucasMod	28503
MR_Jaeschke	7399
PL_certificate	3045
PL_certify	531
PL_isvalid	84
PRIMES_interval	21462
PRIMES_search	45527422
Z_isanypower_nosmalldiv	40833
_isprimePL	42
_uisprime	8818281
_uispsp	311548
addp	189
addp_union	56
addprimes	189
cert_type	98
check_ecppcert	56
check_ecppcertentry	392
cleanprimetab	21
get_disc	1154810
gisprime	13885783
gispseudoprime	14
gprimepi_lower_bound	1
gprimepi_upper_bound	1
init_MR_Jaeschke	585
is2psp	145100
is_2_prp_101	0
islucaspsp	28503
isprime	14626347
isprimePL	2982
ispseudoprime	0
ispsp	1042
iu_coprime	439031
millerrabin	28
pari_set_primetab	378548
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	457608
primes	105
primes0	238
primes_interval	238
primes_interval_i	79
primes_interval_zv	14527
primes_upto_zv	7168
primes_zv	91
randomprime	91
randomprime0	154
removeprimes	28
rmprime	28
rmprimes	28
u_LucasMod_pre	1154810
uis2psp	0
uislucaspsp	0
uislucaspsp_pre	1154810
uisprime	51934921
uisprime_101	16487
uisprime_661	29955
uispsp	434469
uispsp_pre	8823522
uprime	0
uprimepi	8862923

Generated by: LCOV version 2.0-1