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 30584-b9873745ba) Lines: 825 846 97.5 % Date: 2025-12-22 09:21:19 Functions: 72 73 98.6 % Legend: Lines: hit not hit

Function Name	Hit count
Flv_powsum_pre	14924
adjust_orientation	6398
adjust_signs	10780
best_torsion_constraint	148215
check_modinv	2821
classgp_make_pcp	4988
classgp_pcp_check_generators	4448
distinct_inverses	987
evec_clear	5099
evec_compose	518
evec_copy	12495
evec_equal	231
evec_inverse	189
evec_inverse_o	707
evec_n_to_m	4427
evec_order	5614
evec_orders	4427
evec_reduce	21336
evec_ri	12953
evec_ri_mutate	5627
evec_to_index	10726
factor_uv	195014
famatsmall_divexact	1967
find_j_inv_with_given_trace	148400
find_jinv	148209
hasse_bounds	148279
hclassno_wrapper	200002
height_margin	4988
index_to_evec	1379
logfac	0
modinv_has_sign_ambiguity	4988
modinv_inverted_involution	2067
modinv_negated_involution	2067
modinv_units	3964
next_generator	5593
next_prime_evec	1225
norm_eqn_set	188489
oneroot_of_classpoly	148594
orient_pcp	287
oriented_n_action	6398
pcp_get_D	156939
pcp_get_D0	200002
pcp_get_L	9541
pcp_get_L0	9541
pcp_get_fau	4988
pcp_get_h	200002
pcp_get_inv	157179
pcp_get_k	11673
pcp_get_m	6965
pcp_get_n	6685
pcp_get_o	6685
pcp_get_orient_p	6965
pcp_get_orient_q	6965
pcp_get_orient_reps	6685
pcp_get_r	6685
pcp_get_u	146970
polclass	2177
polclass0	6493
polclass_psum	560
polclass_roots_modp	146922
polclass_small_disc	1505
polclass_worker	146992
primecmp	1304046
quadnegclassnou	4988
random_FleV	913087
select_classpoly_prime_pool	4988
select_classpoly_primes	4988
test_curve_order	177269
torsion_constraint	443274
upper_bound_on_classpoly_coeffs	4988
vecsmall_isin_skip	7637
verify_2path	672
verify_edge	3656

Generated by: LCOV version 1.16