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 - FpX_factor.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 91.7 % 1426 1308 Test Date: 2026-07-22 22:45:42 Functions: 91.9 % 124 114 Legend: Lines:     hit not hit

Function Name	Hit count
F2x_degfact	0
Flx_ddf	0
Flx_ddf_pre	0
Flx_nbfact_Frobenius	0
FpX_ddf_i	0
FpX_edf_simple	0
FpX_is_totally_split	0
FpX_isirred_Cantor	0
FpX_nbfact	0
FpX_nbfact_Frobenius	0
F2x_ddf	7
F2x_ddf_to_ddf2	7
FpX_ddf	7
FpX_is_irred_2	7
ddf_to_ddf2	7
F2x_is_irred_2	14
Flx_oneroot_split	14
FpX_degfact_2	14
FpX_simplefact_Cantor	14
ddf_to_ddf2_i	14
FpX_quad_factortype	21
Flx_is_irred_2	56
prime_fact	70
Flx_oneroot_mod_2	98
good_root_of_unity	105
FpX_is_irred	112
FpX_cubic_root	119
FpX_ispower	168
F2x_is_irred	238
FpX_edf	434
all_roots_mod_p	600
FpX_factor_Cantor	909
FpX_factor_Shoup	1008
FpX_ddf_Shoup	1022
FpX_oneroot_split	1043
FpX_edf_rec	1051
Flx_is_irred	1057
Flx_isirred_Cantor	1078
Flx_roots	1372
FpX_factor_2	1485
FpX_factor_deg2	1506
FpX_factor_Yun	1713
Flx_Xn1	2181
Flx_Xnm1	2277
FpX_factor_i	2429
Flx_oneroot	2520
Flx_ispower	3444
FpX_ddf_degree	4256
FpX_oneroot_i	5323
FpX_roots_i	8247
FpX_otherroot	10010
FpX_quad_root	14676
F2x_factor	16697
F2x_degfact_2	19684
F2xq_frobtrace	23295
F2x_Berlekamp_ker	23447
split_nonsquares	31667
split_squares	31667
F2x_edf_simple	34506
F2x_Berlekamp_i	35522
F2x_split_Berlekamp	35966
Flx_oneroot_split_pre	42962
FpX_degfact	47947
Flx_is_totally_split_i	82165
Flx_is_totally_split	82172
Flx_root_mod_2	96014
FpX_nbroots	154016
FpX_roots_mult	227563
FpX_oneroot	234129
FpX_split_part	251953
F2x_Cantor_i	304432
F2x_factor_Cantor	304432
F2x_factor_squarefree	339939
Flx_factor_squarefree	349140
FpX_factor_squarefree	349888
trivial_fact	354268
F2x_factor_Shoup	355533
F2x_ddf_simple	355537
Flx_cubic_root	431267
split_todo	432248
Flx_edf_simple	434914
FpX_roots	436381
F2x_quad_factortype	472467
split_done	482546
split_add_done	526828
ZX_rootmod_init	670510
Flx_nbfact_Frobenius_pre	680323
Flx_nbfact	680325
Flx_nbfact_pre	680325
Flx_factor	718736
Flx_edf	746940
F2x_factor_2	1188717
F2x_factor_deg2	1208416
Flx_edf_rec	1408357
Flx_nbfact_by_degree	1456630
F2x_factor_i	1548378
Flx_factor_Cantor	1616992
Flx_factor_Shoup	1690362
FE_concat	1922348
Flx_factor_2	2043190
ddf_to_nbfact	2372334
Flx_quad_factortype	2489970
Flx_degfact_2	2516017
FpX_factor	4431099
ZX_factmod_init	4479171
Flx_oneroot_pre	4537614
Flx_factor_deg2	4559119
Flx_oneroot_pre_i	4580626
split_Flx_cut_out_roots	4883964
split_init	4892675
Flx_nbroots	4955421
split_add	5275489
split_moveto_done	5276062
Flx_simplefact_Cantor	5349817
vddf_to_simplefact	5351289
Flx_factor_squarefree_pre	7318582
Flx_degfact	7862439
Flx_ddf_Shoup	9256651
Flx_factor_i	11604926
cmpGuGu	16628207
Flx_otherroot	18047563
Flx_roots_pre	29225657
Flx_quad_root	30205119
Fl_disc_bc	32687176

Generated by: LCOV version 2.0-1