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 30288-703288f808) Lines: 2314 2385 97.0 % Date: 2025-05-19 09:23:07 Functions: 144 144 100.0 % Legend: Lines: hit not hit

Function Name	Hit count
phi2_w3w13_ZV	14
phi2_atkin3_ZV	21
phi2_w3w3e2_ZV	21
phi3_f3_ZV	21
phi2_w3w5_ZV	35
phi3_w2w13_ZV	35
phi5_w3w7_ZV	42
db_add_levels	45
FpV_deriv	56
phi2_w5w7_ZV	56
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
weber_exponent	63
phi7_w2w5_ZV	98
phi2_g2_ZV	119
Fp_polmodular_evalx	126
modinv_parent	147
modinv_parent_power	147
polmodular0_powerup_ZM	147
phi5_f_ZV	182
phi3_w2w7_ZV	196
phi_w3w13_j	210
double_eta_raw_to_Fp	231
modinv_f3_from_j	358
modinv_ramified	581
polmodular	630
twelth_root	899
modinv_is_Weber	945
Fp_modinv_to_j	1022
phi_w2w3_j	1060
phi_w3w5_j	1150
modinv_j_from_f	1830
phi5_ZV	1859
phi3_ZV	1889
phi_w2w13_j	2340
phi_w3w7_j	2411
Flv_deriv_pre_inplace	2464
eval_modpoly_modp	2674
make_pcp_floor	2880
make_pcp_surface	2880
phi_w5w7_j	2896
discriminant_with_classno_at_least	3008
modpoly_height_bound	3008
select_L0	3008
calc_primes_for_discriminants	3010
modpoly_pickD	3010
scanD0	3010
phi_w2w5_j	3039
modinv_f_from_j	3070
phi_atkin3_j	3185
fourth_root	4073
phi_w3w3_j	4113
polmodular_db_add_levels	4913
eighth_root	5045
double_eta_initial_js	5963
modinv_double_eta_from_j	5963
sixth_root	6153
modinv_j_from_2double_eta	6511
phi_w2w7_j	6649
safe_abs_sqrt	10201
inflate_polys	10583
normalise_coeffs	10583
modpoly_pickD_primes	11928
modinv_double_eta_from_2j	14609
modfn_unambiguous_root	14688
modinv_pfilter	14938
carray_reverse_inplace	18687
polmodular_ZXX	19161
polmodular_ZM	19245
phi2_ZV	19994
polmodular_db_init	21471
sympol_to_ZM	24701
internal_db	24848
polmodular_small_ZM	24848
polmodular_db_add_level	25057
double_eta_Fl	26535
double_eta_raw	27053
double_eta_root	27496
polmodular0_ZM	27716
modinv_max_internal_level	27835
Flx_double_eta_jpoly	30911
double_eta_power	30911
double_eta_raw_to_Fl	33047
orientation_ambiguity	34756
polmodular_split_p_Flm	38674
polmodular_worker	38675
oneroot_of_classpoly	38678
enum_volcano_floor	38690
enum_volcano_surface	38690
get_Lsqr_cycle	38690
root_matrix	38690
modinv_level	40281
roots_to_coeffs	41098
Flv_powu_inplace_pre	41381
interpolate_coeffs	41442
modinv_sparse_factor	44549
Flx_double_eta_xpoly	47110
verify_L_sylow_is_cyclic	47216
double_eta_exponent	58638
modfn_preimage	65453
qform_primeform2	77321
compute_L_isogenous_curve	83337
select_curve_with_L_tors_point	83338
find_noniso_L_isogenous_curve	83341
Fl_mul5	91866
Fl_mul7	91867
Fle_quotient_from_kernel_generator	91867
find_L_tors_point	134376
mkqfis	134944
qfb_nform	135821
modfn_root	192113
primeform_discrete_log	198033
qfb_distinct_prods	229559
modinv_is_double_eta	236987
Flv_lastnonzero	345800
polmodular_db_for_inv	357207
polmodular_db_getp	519457
modinv_odd_conductor	527272
update_Lsqr_cycle	534565
vecsmall_pick	573259
append_neighbours	573262
Fl_mul6	750051
check_generators	770009
Fl_mul8	841910
primeform_exp_order	1060162
Fl_mul4	1683773
qfb_is_two_torsion	1692040
disc_best_modinv	1907423
Flm_Fl_phi3_evalx	3244099
prime_to_conductor	3249610
red_primeform	3249610
Flm_Fl_phi5_evalx	5024270
Fl_addmul4	5026085
modinv_double_eta_good_disc	5313964
modinv_degree	7244534
Fl_addmul3	9728289
modinv_good_prime	10750455
_qsort_cmp	14433820
modinv_good_disc	14990300
modinv_height_factor	21310598
Fl_addmul5	25064142
Flm_Fl_phi2_evalx	26445924
Flm_Fl_polmodular_evalx	41901163
Fl_addmul2	56010459

Generated by: LCOV version 1.16