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 30074-db9b3c0519) Lines: 825 846 97.5 % Date: 2025-03-13 08:38:27 Functions: 72 73 98.6 % Legend: Lines: hit not hit

Function Name	Hit count
logfac	0
evec_inverse	174
evec_equal	222
orient_pcp	240
evec_compose	444
polclass_psum	474
verify_2path	576
evec_inverse_o	630
distinct_inverses	858
next_prime_evec	1062
index_to_evec	1188
polclass_small_disc	1278
modinv_inverted_involution	1851
modinv_negated_involution	1851
polclass	1860
famatsmall_divexact	1967
check_modinv	2394
modinv_units	2979
verify_edge	3400
evec_n_to_m	3771
evec_orders	3771
classgp_pcp_check_generators	3789
classgp_make_pcp	4228
height_margin	4228
modinv_has_sign_ambiguity	4228
pcp_get_fau	4228
quadnegclassnou	4228
select_classpoly_prime_pool	4228
select_classpoly_primes	4228
upper_bound_on_classpoly_coeffs	4228
evec_clear	4383
evec_order	4801
next_generator	4909
evec_ri_mutate	4969
adjust_orientation	5283
oriented_n_action	5283
polclass0	5506
pcp_get_n	5523
pcp_get_o	5523
pcp_get_orient_reps	5523
pcp_get_r	5523
pcp_get_m	5757
pcp_get_orient_p	5757
pcp_get_orient_q	5757
vecsmall_isin_skip	6541
pcp_get_L	7983
pcp_get_L0	7983
evec_to_index	9259
adjust_signs	9299
pcp_get_k	9751
evec_copy	10534
evec_ri	11634
Flv_powsum_pre	13700
evec_reduce	18542
pcp_get_u	119321
polclass_roots_modp	119321
polclass_worker	119321
find_jinv	120482
best_torsion_constraint	120532
hasse_bounds	120532
find_j_inv_with_given_trace	120616
oneroot_of_classpoly	120616
pcp_get_D	127777
pcp_get_inv	128017
test_curve_order	143338
norm_eqn_set	152535
factor_uv	159801
hclassno_wrapper	164029
pcp_get_D0	164029
pcp_get_h	164029
torsion_constraint	361596
random_FleV	739842
primecmp	1056593

Generated by: LCOV version 1.16