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 30106-3f17b77578) Lines: 825 846 97.5 % Date: 2025-03-31 09:19:50 Functions: 72 73 98.6 % Legend: Lines: hit not hit

Function Name	Hit count
logfac	0
evec_inverse	175
evec_equal	231
orient_pcp	294
evec_compose	518
polclass_psum	574
verify_2path	672
evec_inverse_o	707
distinct_inverses	987
next_prime_evec	1225
index_to_evec	1386
polclass_small_disc	1505
famatsmall_divexact	2001
modinv_inverted_involution	2175
modinv_negated_involution	2175
polclass	2177
check_modinv	2800
verify_edge	3656
modinv_units	3832
evec_n_to_m	4314
evec_orders	4314
classgp_pcp_check_generators	4335
classgp_make_pcp	4868
height_margin	4868
modinv_has_sign_ambiguity	4868
pcp_get_fau	4868
quadnegclassnou	4868
select_classpoly_prime_pool	4868
select_classpoly_primes	4868
upper_bound_on_classpoly_coeffs	4868
evec_clear	4944
evec_order	5501
next_generator	5536
evec_ri_mutate	5620
polclass0	6373
adjust_orientation	6511
oriented_n_action	6511
pcp_get_n	6805
pcp_get_o	6805
pcp_get_orient_reps	6805
pcp_get_r	6805
pcp_get_m	7092
pcp_get_orient_p	7092
pcp_get_orient_q	7092
vecsmall_isin_skip	7631
pcp_get_L	9326
pcp_get_L0	9326
evec_to_index	10839
adjust_signs	11193
pcp_get_k	11673
evec_copy	12467
evec_ri	13199
Flv_powsum_pre	16000
evec_reduce	21280
polclass_roots_modp	139740
pcp_get_u	139779
polclass_worker	139799
find_jinv	140967
best_torsion_constraint	140996
hasse_bounds	141035
find_j_inv_with_given_trace	141148
oneroot_of_classpoly	141417
pcp_get_D	149499
pcp_get_inv	149773
test_curve_order	168223
norm_eqn_set	178460
factor_uv	188987
hclassno_wrapper	193855
pcp_get_D0	193855
pcp_get_h	193855
torsion_constraint	421351
random_FleV	867224
primecmp	1241071

Generated by: LCOV version 1.16