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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30702-bddb8d6928) Lines: 1095 1201 91.2 % Date: 2026-02-23 02:23:56 Functions: 122 130 93.8 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_ellcard_Shanks	218795
Fl_ellpoint	6228
Fl_elltrace	533326
Fl_elltrace_CM	999048
Fl_elltrace_naive	656776
Fle_add_inplace	4921807
Fle_dbl_inplace	194716
FpE_Miller	44
FpE_Miller_add	4
FpE_Miller_dbl	92
FpE_Miller_line	45
FpE_add	788423
FpE_add_ip	305694
FpE_add_slope	788427
FpE_changepoint	702
FpE_changepointinv	1530
FpE_chord_update	4
FpE_dbl	221804
FpE_dbl_slope	222330
FpE_log	42
FpE_mul	349
FpE_neg	310717
FpE_neg_i	0
FpE_order	643
FpE_sub	0
FpE_tangent_update	92
FpE_tatepairing	174
FpE_to_FpJ	169828
FpE_to_mod	126
FpE_vert	140
FpE_weilpairing	62544
FpJ_add	510907
FpJ_dbl	1711518
FpJ_mul	4908
FpJ_neg	0
FpJ_to_FpE	169396
FpXQE_Miller	54
FpXQE_Miller_add	486
FpXQE_Miller_dbl	3564
FpXQE_Miller_line	3990
FpXQE_add	215200
FpXQE_add_slope	215680
FpXQE_changepoint	1610
FpXQE_changepointinv	838
FpXQE_chord_update	486
FpXQE_dbl	226517
FpXQE_dbl_slope	230033
FpXQE_log	0
FpXQE_mul	802
FpXQE_neg	62855
FpXQE_neg_i	0
FpXQE_order	12
FpXQE_sub	0
FpXQE_tangent_update	3564
FpXQE_tatepairing	6
FpXQE_vert	4104
FpXQE_weilpairing	24
FpXQ_ellcard	7293
FpXQ_ellcard_i	7293
FpXQ_ellcard_supersingular	6
FpXQ_ellcardj	1446
FpXQ_ellgens	7
FpXQ_ellgroup	13
FpXQ_ellj	1473
FpXQ_elljissupersingular	141870
FpXQ_elltwist	720
FpXQ_ffellcard	7
FpXQ_is4power	6
FpXQ_is_quad	28740
FpX_quad_root	954
Fp_ellcard	2429244
Fp_ellcard_CM	2168640
Fp_ellcard_Shanks	79
Fp_ellgens	492
Fp_ellgroup	103470
Fp_ellj	84
Fp_ellj_get_CM	45513
Fp_ellj_nodiv	42636
Fp_ellj_to_a4a6	936
Fp_elljissupersingular	3081
Fp_ellpoint	0
Fp_elltwist	0
Fp_ffellcard	12606
Fp_jissupersingular	2245
Fp_path_extends_to_floor	353
FqX_quad_root	59212
Fq_ellcard_supersingular	18
Fq_elljissupersingular	900
Fq_path_extends_to_floor	4037
RgE_to_FpE	1530
RgE_to_FpXQE	838
_FpE_add	769152
_FpE_dbl	221804
_FpE_mul	763038
_FpE_pairorder	62334
_FpE_rand	159665
_FpJ_add	510907
_FpJ_dbl	1710624
_FpJ_mul	4908
_FpXQE_add	215200
_FpXQE_dbl	226517
_FpXQE_mul	70102
_FpXQE_pairorder	18
_FpXQE_rand	129
_fix	19196
affii2	9440
ap_cm	1200
ap_j0	85878
ap_j1728	2465256
ap_j287496	120
ap_j8000	114
closest_lift	218941
compare_multiples	12916581
ec_ap_cm	426468
ellinf_FpJ	38273
ellsupersingularj_FpXQ	1032
ellsupersingularj_easy_FpXQ	1014
elltrace_extension	13260
find_inert_disc	1014
get_FpE_group	774
get_FpXQE_group	14
get_table_size	79
is_CMj	564509
jissupersingular	12000
random_FpE	161711
random_FpXQE	930
random_nonsquare_Fp	360
random_nonsquare_FpXQ	720
u2_is_CMj	14579
uclosest_lift	225011

Generated by: LCOV version 1.16