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 30316-0578a48613) Lines: 825 846 97.5 % Date: 2025-06-02 09:19:41 Functions: 72 73 98.6 % Legend: Lines: hit not hit

Function Name	Hit count
logfac	0
evec_inverse	175
evec_equal	231
orient_pcp	280
evec_compose	518
polclass_psum	574
verify_2path	672
evec_inverse_o	707
distinct_inverses	987
next_prime_evec	1225
index_to_evec	1372
polclass_small_disc	1505
modinv_inverted_involution	2082
modinv_negated_involution	2082
polclass	2177
check_modinv	2800
famatsmall_divexact	3037
verify_edge	3656
modinv_units	3879
evec_n_to_m	4349
evec_orders	4349
classgp_pcp_check_generators	4370
classgp_make_pcp	4889
height_margin	4889
modinv_has_sign_ambiguity	4889
pcp_get_fau	4889
quadnegclassnou	4889
select_classpoly_prime_pool	4889
select_classpoly_primes	4889
upper_bound_on_classpoly_coeffs	4889
evec_clear	4979
evec_order	5550
next_generator	5571
evec_ri_mutate	5641
adjust_orientation	6215
oriented_n_action	6215
polclass0	6394
pcp_get_n	6495
pcp_get_o	6495
pcp_get_orient_reps	6495
pcp_get_r	6495
pcp_get_m	6768
pcp_get_orient_p	6768
pcp_get_orient_q	6768
vecsmall_isin_skip	7635
pcp_get_L	9351
pcp_get_L0	9351
evec_to_index	10543
adjust_signs	10841
pcp_get_k	11384
evec_copy	12220
evec_ri	13187
Flv_powsum_pre	15230
evec_reduce	21047
polclass_roots_modp	139540
pcp_get_u	139616
polclass_worker	139643
find_jinv	140782
best_torsion_constraint	140791
hasse_bounds	140885
find_j_inv_with_given_trace	140962
oneroot_of_classpoly	141242
pcp_get_D	149386
pcp_get_inv	149604
test_curve_order	168987
norm_eqn_set	178457
factor_uv	189728
hclassno_wrapper	194617
pcp_get_D0	194617
pcp_get_h	194617
torsion_constraint	420984
random_FleV	871035
primecmp	1237943

Generated by: LCOV version 1.16