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 - FpE.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 89.4 % 1277 1142 Test Date: 2026-07-23 17:04:59 Functions: 92.0 % 137 126 Legend: Lines:     hit not hit

Function Name	Hit count
Fl_ellcard_Shanks	430292
Fl_ellpoint	12379
Fl_elltrace	816583
Fl_elltrace_CM	1362518
Fl_elltrace_naive	790606
Fle_add_inplace	8113879
Fle_dbl_inplace	381094
FpE_Miller	44
FpE_Miller_add	4
FpE_Miller_dbl	92
FpE_Miller_line	45
FpE_add	916615
FpE_add_ip	305694
FpE_add_slope	916619
FpE_changepoint	1725
FpE_changepointinv	2733
FpE_chord_update	4
FpE_dbl	258747
FpE_dbl_slope	259341
FpE_log	49
FpE_mul	1316
FpE_neg	362490
FpE_neg_i	0
FpE_order	737
FpE_sub	0
FpE_tangent_update	92
FpE_tatepairing	203
FpE_to_FpJ	198953
FpE_to_mod	1053
FpE_vert	140
FpE_weilpairing	72968
FpJ_add	1131042
FpJ_dbl	6346434
FpJ_mul	5726
FpJ_neg	0
FpJ_to_FpE	198419
FpXQE_Miller	63
FpXQE_Miller_add	567
FpXQE_Miller_dbl	4158
FpXQE_Miller_line	4655
FpXQE_add	221956
FpXQE_add_slope	222516
FpXQE_changepoint	942
FpXQE_changepointinv	42
FpXQE_chord_update	567
FpXQE_dbl	68504
FpXQE_dbl_slope	72606
FpXQE_log	0
FpXQE_mul	0
FpXQE_neg	73329
FpXQE_neg_i	0
FpXQE_order	14
FpXQE_sub	0
FpXQE_tangent_update	4158
FpXQE_tatepairing	7
FpXQE_vert	4788
FpXQE_weilpairing	28
FpXQV_ell_to_a4a6	0
FpXQV_ellcard	0
FpXQV_ellcharpoly	231
FpXQV_initsmall5	231
FpXQ_ellcard	8508
FpXQ_ellcard_i	8508
FpXQ_ellcard_supersingular	7
FpXQ_ellcardj	1687
FpXQ_ellgens	8
FpXQ_ellgroup	15
FpXQ_ellj	1718
FpXQ_elljissupersingular	165508
FpXQ_elltwist	840
FpXQ_ffellcard	8
FpXQ_is4power	7
FpXQ_is_quad	33523
FpX_quad_root	1244
Fp_ellcard	5196303
Fp_ellcard_CM	4890331
Fp_ellcard_Shanks	79
Fp_ellgens	574
Fp_ellgroup	120715
Fp_ellj	98
Fp_ellj_get_CM	54138
Fp_ellj_nodiv	50596
Fp_ellj_to_a4a6	1092
Fp_elljissupersingular	3780
Fp_ellpoint	0
Fp_elltwist	0
Fp_ffellcard	14637
Fp_jissupersingular	2788
Fp_path_extends_to_floor	455
FqX_quad_root	71367
Fq_ellcard_supersingular	21
Fq_elljissupersingular	1043
Fq_path_extends_to_floor	4881
RgE_is_FpE	1088
RgE_is_FpXQE	249340
RgE_to_FpE	2733
RgE_to_FpXQE	42
_FpE_add	897344
_FpE_dbl	258747
_FpE_mul	891006
_FpE_pairorder	72723
_FpE_rand	186277
_FpJ_add	1131042
_FpJ_dbl	6345391
_FpJ_mul	5726
_FpXQE_add	221956
_FpXQE_dbl	68504
_FpXQE_mul	80841
_FpXQE_pairorder	21
_FpXQE_rand	147
_fix	19196
affii2	9440
ap_cm	1456
ap_j0	134287
ap_j1728	5201788
ap_j287496	147
ap_j8000	133
closest_lift	430436
compare_multiples	17772166
ec_ap_cm	497964
ell_to_a4a6_FpXQ	1726
ellinf_FpJ	44635
ellsupersingularj_FpXQ	1204
ellsupersingularj_easy_FpXQ	1183
elltrace_extension	15400
find_inert_disc	1183
get_FpE_group	903
get_FpXQE_group	16
get_table_size	79
is_CMj	673868
jissupersingular	14007
random_FpE	188664
random_FpXQE	1081
random_nonsquare_Fp	420
random_nonsquare_FpXQ	840
u2_is_CMj	14806
uclosest_lift	442657

Generated by: LCOV version 2.0-1