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 - polmodular.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30107-5d3c5ac62a) Lines: 2314 2385 97.0 % Date: 2025-04-01 09:20:36 Functions: 144 144 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_addmul2	55915852
Fl_addmul3	9716211
Fl_addmul4	5021777
Fl_addmul5	25001387
Fl_mul4	1683851
Fl_mul5	91884
Fl_mul6	750161
Fl_mul7	91882
Fl_mul8	842006
Fle_quotient_from_kernel_generator	91883
Flm_Fl_phi2_evalx	26385497
Flm_Fl_phi3_evalx	3240625
Flm_Fl_phi5_evalx	5015542
Flm_Fl_polmodular_evalx	41837759
Flv_deriv_pre_inplace	2464
Flv_lastnonzero	345652
Flv_powu_inplace_pre	41380
Flx_double_eta_jpoly	30908
Flx_double_eta_xpoly	47114
FpV_deriv	56
Fp_modinv_to_j	1020
Fp_polmodular_evalx	126
_qsort_cmp	14433820
append_neighbours	573234
calc_primes_for_discriminants	3010
carray_reverse_inplace	18657
check_generators	770009
compute_L_isogenous_curve	83329
db_add_levels	45
disc_best_modinv	1907423
discriminant_with_classno_at_least	3008
double_eta_Fl	26540
double_eta_exponent	58635
double_eta_initial_js	5963
double_eta_power	30909
double_eta_raw	27058
double_eta_raw_to_Fl	33050
double_eta_raw_to_Fp	231
double_eta_root	27495
eighth_root	5053
enum_volcano_floor	38689
enum_volcano_surface	38685
eval_modpoly_modp	2674
find_L_tors_point	134367
find_noniso_L_isogenous_curve	83337
fourth_root	4073
get_Lsqr_cycle	38690
inflate_polys	10582
internal_db	24848
interpolate_coeffs	41441
make_pcp_floor	2880
make_pcp_surface	2880
mkqfis	134944
modfn_preimage	65450
modfn_root	192119
modfn_unambiguous_root	14691
modinv_degree	7244537
modinv_double_eta_from_2j	14614
modinv_double_eta_from_j	5963
modinv_double_eta_good_disc	5313964
modinv_f3_from_j	358
modinv_f_from_j	3070
modinv_good_disc	14990300
modinv_good_prime	10750455
modinv_height_factor	21310598
modinv_is_Weber	945
modinv_is_double_eta	236999
modinv_j_from_2double_eta	6511
modinv_j_from_f	1830
modinv_level	40281
modinv_max_internal_level	27835
modinv_odd_conductor	527272
modinv_parent	147
modinv_parent_power	147
modinv_pfilter	14938
modinv_ramified	581
modinv_sparse_factor	44556
modpoly_height_bound	3008
modpoly_pickD	3010
modpoly_pickD_primes	11928
normalise_coeffs	10582
oneroot_of_classpoly	38685
orientation_ambiguity	34756
phi2_ZV	19994
phi2_atkin3_ZV	21
phi2_g2_ZV	119
phi2_w3w13_ZV	14
phi2_w3w3e2_ZV	21
phi2_w3w5_ZV	35
phi2_w5w7_ZV	56
phi3_ZV	1889
phi3_f3_ZV	21
phi3_w2w13_ZV	35
phi3_w2w7_ZV	196
phi5_ZV	1859
phi5_f_ZV	182
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
phi5_w3w7_ZV	42
phi7_w2w5_ZV	98
phi_atkin3_j	3186
phi_w2w13_j	2340
phi_w2w3_j	1060
phi_w2w5_j	3039
phi_w2w7_j	6651
phi_w3w13_j	210
phi_w3w3_j	4113
phi_w3w5_j	1147
phi_w3w7_j	2412
phi_w5w7_j	2900
polmodular	630
polmodular0_ZM	27716
polmodular0_powerup_ZM	147
polmodular_ZM	19245
polmodular_ZXX	19161
polmodular_db_add_level	25057
polmodular_db_add_levels	4913
polmodular_db_for_inv	356849
polmodular_db_getp	519540
polmodular_db_init	21471
polmodular_small_ZM	24848
polmodular_split_p_Flm	38683
polmodular_worker	38688
prime_to_conductor	3249610
primeform_discrete_log	198033
primeform_exp_order	1060162
qfb_distinct_prods	229559
qfb_is_two_torsion	1692040
qfb_nform	135821
qform_primeform2	77321
red_primeform	3249610
root_matrix	38689
roots_to_coeffs	41098
safe_abs_sqrt	10201
scanD0	3010
select_L0	3008
select_curve_with_L_tors_point	83331
sixth_root	6153
sympol_to_ZM	24701
twelth_root	898
update_Lsqr_cycle	534518
vecsmall_pick	573220
verify_L_sylow_is_cyclic	47238
weber_exponent	63

Generated by: LCOV version 1.16