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 30418-83092bf331) Lines: 825 846 97.5 % Date: 2025-07-29 09:22:49 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	2106
modinv_negated_involution	2106
polclass	2177
famatsmall_divexact	2358
check_modinv	2821
modinv_units	3535
verify_edge	3656
evec_n_to_m	4651
evec_orders	4651
classgp_pcp_check_generators	4672
classgp_make_pcp	5233
height_margin	5233
modinv_has_sign_ambiguity	5233
pcp_get_fau	5233
quadnegclassnou	5233
select_classpoly_prime_pool	5233
select_classpoly_primes	5233
upper_bound_on_classpoly_coeffs	5233
evec_clear	5407
evec_ri_mutate	5669
next_generator	5817
evec_order	5887
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	6703
pcp_get_m	6725
pcp_get_orient_p	6725
pcp_get_orient_q	6725
vecsmall_isin_skip	7634
pcp_get_L	9989
pcp_get_L0	9989
evec_to_index	10500
adjust_signs	11511
pcp_get_k	11685
evec_copy	12598
evec_ri	13034
Flv_powsum_pre	17216
evec_reduce	21460
polclass_roots_modp	153298
pcp_get_u	153367
polclass_worker	153409
find_jinv	154554
best_torsion_constraint	154580
hasse_bounds	154631
find_j_inv_with_given_trace	154733
oneroot_of_classpoly	155017
pcp_get_D	163817
pcp_get_inv	164043
test_curve_order	185274
norm_eqn_set	193763
factor_uv	201164
hclassno_wrapper	206397
pcp_get_D0	206397
pcp_get_h	206397
torsion_constraint	461939
random_FleV	933712
primecmp	1352602

Generated by: LCOV version 1.16