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 30587-f85873d515) Lines: 2651 2817 94.1 % Date: 2025-12-27 09:21:13 Functions: 157 163 96.3 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_addmul2	64549057
Fl_addmul3	13209390
Fl_addmul4	5173053
Fl_addmul5	25729121
Fl_mul4	1854428
Fl_mul5	98043
Fl_mul6	829424
Fl_mul7	98043
Fl_mul8	927396
Fle_quotient_from_kernel_generator	98051
Flm_Fl_phi2_evalx	30215538
Flm_Fl_phi3_evalx	4414953
Flm_Fl_phi5_evalx	5164182
Flm_Fl_polmodular_evalx	46759125
Flv_deriv_pre_inplace	2464
Flv_lastnonzero	330356
Flv_powu_inplace_pre	38568
Flx_double_eta_jpoly	31102
Flx_double_eta_xpoly	53901
FpV_deriv	56
Fp_modinv_to_j	1043
Fp_polmodular_evalx	126
_qsort_cmp	14914912
append_neighbours	667665
calc_primes_for_discriminants	3116
carray_reverse_inplace	20083
check_generators	802637
compute_L_isogenous_curve	89351
db_add_levels	24
disc_best_modinv	1907423
discriminant_with_classno_at_least	3114
double_eta_Fl	30003
double_eta_exponent	62318
double_eta_initial_js	6102
double_eta_power	31102
double_eta_raw	30640
double_eta_raw_to_Fl	36401
double_eta_raw_to_Fp	357
double_eta_root	30860
eighth_root	4719
enum_volcano_floor	41627
enum_volcano_surface	41622
eval_modpoly_modp	2674
find_L_tors_point	143370
find_noniso_L_isogenous_curve	89343
fourth_root	3925
get_Lsqr_cycle	41628
inflate_polys	9644
internal_db	24967
interpolate_coeffs	44188
make_pcp_floor	2992
make_pcp_surface	2992
mkqfis	148849
modfn_preimage	71053
modfn_root	201915
modfn_unambiguous_root	17877
modinv_degree	7402228
modinv_double_eta_from_2j	17799
modinv_double_eta_from_j	6101
modinv_double_eta_good_disc	5468111
modinv_f3_from_j	168
modinv_f_from_j	3146
modinv_good_atkin	633269
modinv_good_disc	15109326
modinv_good_prime	11096729
modinv_height_factor	22899725
modinv_is_Weber	1029
modinv_is_double_eta	251072
modinv_j_from_2double_eta	6398
modinv_j_from_f	1830
modinv_level	40815
modinv_max_internal_level	28067
modinv_odd_conductor	548100
modinv_parent	140
modinv_parent_power	140
modinv_pfilter	15691
modinv_ramified	700
modinv_sparse_factor	47699
modpoly_height_bound	3114
modpoly_pickD	3116
modpoly_pickD_primes	12575
normalise_coeffs	9644
oneroot_of_classpoly	41617
orientation_ambiguity	43897
phi2_ZV	20050
phi2_atkin11_ZV	0
phi2_atkin13_ZV	0
phi2_atkin17_ZV	0
phi2_atkin19_ZV	0
phi2_atkin23_ZV	7
phi2_atkin29_ZV	14
phi2_atkin31_ZV	14
phi2_atkin3_ZV	7
phi2_atkin5_ZV	7
phi2_atkin7_ZV	14
phi2_g2_ZV	98
phi2_w3w13_ZV	14
phi2_w3w3e2_ZV	21
phi2_w3w5_ZV	35
phi2_w5w7_ZV	70
phi3_ZV	1917
phi3_f3_ZV	14
phi3_w2w13_ZV	49
phi3_w2w7_ZV	182
phi5_ZV	1887
phi5_f_ZV	175
phi5_w2w3_ZV	56
phi5_w3w3_ZV	63
phi5_w3w7_ZV	42
phi7_w2w5_ZV	91
phi_atkin11_j	0
phi_atkin13_j	224
phi_atkin17_j	672
phi_atkin19_j	0
phi_atkin23_j	504
phi_atkin29_j	2039
phi_atkin31_j	2222
phi_atkin3_j	931
phi_atkin5_j	287
phi_atkin7_j	273
phi_w2w13_j	2755
phi_w2w3_j	1060
phi_w2w5_j	2500
phi_w2w7_j	6166
phi_w3w13_j	210
phi_w3w3_j	3883
phi_w3w5_j	1160
phi_w3w7_j	2412
phi_w5w7_j	3342
polmodular	651
polmodular0_ZM	27948
polmodular0_powerup_ZM	140
polmodular_ZM	19294
polmodular_ZXX	19210
polmodular_db_add_level	26100
polmodular_db_add_levels	5025
polmodular_db_for_inv	377651
polmodular_db_getp	548070
polmodular_db_init	21527
polmodular_small_ZM	24967
polmodular_split_p_Flm	41608
polmodular_worker	41616
prime_to_conductor	3464791
primeform_discrete_log	209134
primeform_exp_order	1101615
qfb_distinct_prods	231183
qfb_is_two_torsion	1697990
qfb_nform	144557
qform_primeform2	84555
red_primeform	3464791
root_matrix	41630
roots_to_coeffs	43862
safe_abs_sqrt	9840
scanD0	3116
select_L0	3114
select_curve_with_L_tors_point	89352
sixth_root	5340
sympol_to_ZM	24827
twelth_root	893
update_Lsqr_cycle	626022
vecsmall_pick	667651
verify_L_sylow_is_cyclic	50320
weber_exponent	63

Generated by: LCOV version 1.16