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 - polclass.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30371-bd27ad7662) Lines: 825 846 97.5 % Date: 2025-07-06 09:22:54 Functions: 72 73 98.6 % Legend: Lines: hit not hit

Function Name	Hit count
logfac	0
evec_inverse	217
evec_equal	231
orient_pcp	280
evec_compose	518
polclass_psum	595
verify_2path	672
evec_inverse_o	707
distinct_inverses	987
next_prime_evec	1225
index_to_evec	1372
polclass_small_disc	1470
modinv_inverted_involution	2105
modinv_negated_involution	2105
polclass	2177
famatsmall_divexact	2370
check_modinv	2814
modinv_units	3535
verify_edge	3656
evec_n_to_m	4636
evec_orders	4636
classgp_pcp_check_generators	4657
classgp_make_pcp	5218
height_margin	5218
modinv_has_sign_ambiguity	5218
pcp_get_fau	5218
quadnegclassnou	5218
select_classpoly_prime_pool	5218
select_classpoly_primes	5218
upper_bound_on_classpoly_coeffs	5218
evec_clear	5392
evec_ri_mutate	5669
next_generator	5802
evec_order	5872
adjust_orientation	6172
oriented_n_action	6172
pcp_get_n	6452
pcp_get_o	6452
pcp_get_orient_reps	6452
pcp_get_r	6452
polclass0	6688
pcp_get_m	6725
pcp_get_orient_p	6725
pcp_get_orient_q	6725
vecsmall_isin_skip	7627
pcp_get_L	9962
pcp_get_L0	9962
evec_to_index	10500
adjust_signs	11511
pcp_get_k	11670
evec_copy	12583
evec_ri	13280
Flv_powsum_pre	17216
evec_reduce	21445
polclass_roots_modp	153307
pcp_get_u	153366
polclass_worker	153405
find_jinv	154526
best_torsion_constraint	154540
hasse_bounds	154622
find_j_inv_with_given_trace	154689
oneroot_of_classpoly	155008
pcp_get_D	163779
pcp_get_inv	164030
test_curve_order	185011
norm_eqn_set	193847
factor_uv	199645
hclassno_wrapper	204863
pcp_get_D0	204863
pcp_get_h	204863
torsion_constraint	461955
random_FleV	930717
primecmp	1358361

Generated by: LCOV version 1.16