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 30670-52869c8c38) Lines: 1095 1201 91.2 % Date: 2026-02-05 09:23:49 Functions: 122 130 93.8 % Legend: Lines: hit not hit

Function Name	Hit count
FpE_neg_i	0
FpE_sub	0
FpJ_neg	0
FpXQE_log	0
FpXQE_neg_i	0
FpXQE_sub	0
Fp_ellpoint	0
Fp_elltwist	0
FpE_Miller_add	4
FpE_chord_update	4
FpXQE_tatepairing	7
FpXQ_ellcard_supersingular	7
FpXQ_is4power	7
FpXQ_ellgens	8
FpXQ_ffellcard	8
FpXQE_order	14
FpXQ_ellgroup	15
get_FpXQE_group	16
Fq_ellcard_supersingular	21
_FpXQE_pairorder	21
FpXQE_weilpairing	28
FpE_Miller	44
FpE_Miller_line	45
FpE_log	49
FpXQE_Miller	63
Fp_ellcard_Shanks	79
get_table_size	79
FpE_Miller_dbl	92
FpE_tangent_update	92
Fp_ellj	98
ap_j8000	133
FpE_vert	140
ap_j287496	140
_FpXQE_rand	147
FpE_tatepairing	203
random_nonsquare_Fp	420
Fp_path_extends_to_floor	455
FpXQE_Miller_add	567
FpXQE_chord_update	567
Fp_ellgens	574
FpE_order	737
FpXQ_elltwist	840
random_nonsquare_FpXQ	840
get_FpE_group	903
FpXQE_mul	934
FpXQE_changepointinv	976
RgE_to_FpXQE	976
FpE_to_mod	1049
Fq_elljissupersingular	1050
random_FpXQE	1081
Fp_ellj_to_a4a6	1092
ellsupersingularj_easy_FpXQ	1183
find_inert_disc	1183
ellsupersingularj_FpXQ	1204
FpX_quad_root	1244
FpE_mul	1312
ap_cm	1400
FpXQ_ellcardj	1687
FpXQ_ellj	1718
FpE_changepoint	1721
FpXQE_changepoint	1876
FpE_changepointinv	2729
RgE_to_FpE	2729
Fp_jissupersingular	2788
Fp_elljissupersingular	3780
FpXQE_Miller_dbl	4158
FpXQE_tangent_update	4158
FpXQE_Miller_line	4655
FpXQE_vert	4788
Fq_path_extends_to_floor	4881
FpJ_mul	5726
_FpJ_mul	5726
Fl_ellpoint	7269
FpXQ_ellcard	8508
FpXQ_ellcard_i	8508
affii2	9440
jissupersingular	14007
u2_is_CMj	14579
Fp_ffellcard	14707
elltrace_extension	15470
_fix	19196
FpXQ_is_quad	33530
Fp_ellj_nodiv	49720
ellinf_FpJ	49768
Fp_ellj_get_CM	53274
FqX_quad_root	71367
_FpE_pairorder	72725
FpE_weilpairing	72970
FpXQE_neg	73329
_FpXQE_mul	81874
ap_j0	99865
Fp_ellgroup	120715
FpXQ_elljissupersingular	165515
_FpE_rand	186277
random_FpE	188664
FpJ_to_FpE	203530
FpE_to_FpJ	204064
Fle_dbl_inplace	227118
FpXQE_add	251500
_FpXQE_add	251500
FpXQE_add_slope	252060
Fl_ellcard_Shanks	255247
closest_lift	255408
uclosest_lift	262513
FpXQE_dbl	265037
_FpXQE_dbl	265037
FpXQE_dbl_slope	269139
FpE_dbl	288152
_FpE_dbl	288152
FpE_dbl_slope	288746
FpE_add_ip	305694
FpE_neg	362490
ec_ap_cm	495625
Fl_elltrace	622200
is_CMj	661150
Fl_elltrace_naive	766203
_FpE_add	897344
FpE_add	916615
FpE_add_slope	916619
_FpE_mul	925521
_FpJ_add	1137576
FpJ_add	1137884
Fl_elltrace_CM	1163624
Fp_ellcard_CM	2529731
Fp_ellcard	2833673
ap_j1728	2874408
Fle_add_inplace	5791406
_FpJ_dbl	6294076
FpJ_dbl	6307499
compare_multiples	15378498

Generated by: LCOV version 1.16