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 v2.19.0 lcov report (development 31092-e6893b0017) Lines: 91.7 % 1426 1308 Test Date: 2026-10-08 17:02:35 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	2177
Flx_Xnm1	2273
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	16682
F2x_degfact_2	19684
F2xq_frobtrace	23339
F2x_Berlekamp_ker	23431
split_nonsquares	31663
split_squares	31663
F2x_edf_simple	34510
F2x_Berlekamp_i	35507
F2x_split_Berlekamp	35941
Flx_oneroot_split_pre	42978
FpX_degfact	47947
Flx_is_totally_split_i	82166
Flx_is_totally_split	82173
Flx_root_mod_2	96013
FpX_nbroots	154016
FpX_roots_mult	227584
FpX_oneroot	234129
FpX_split_part	251953
F2x_Cantor_i	304413
F2x_factor_Cantor	304413
F2x_factor_squarefree	339906
Flx_factor_squarefree	349161
FpX_factor_squarefree	349909
trivial_fact	354278
F2x_factor_Shoup	355512
F2x_ddf_simple	355519
Flx_cubic_root	431323
split_todo	432369
Flx_edf_simple	435404
FpX_roots	436393
F2x_quad_factortype	472473
split_done	482649
split_add_done	526925
ZX_rootmod_init	670522
Flx_nbfact	680434
Flx_nbfact_Frobenius_pre	680434
Flx_nbfact_pre	680434
Flx_factor	718764
Flx_edf	747005
F2x_factor_2	1188764
F2x_factor_deg2	1208462
Flx_edf_rec	1408449
Flx_nbfact_by_degree	1456920
F2x_factor_i	1548382
Flx_factor_Cantor	1617022
Flx_factor_Shoup	1690379
FE_concat	1922344
Flx_factor_2	2043303
ddf_to_nbfact	2372437
Flx_quad_factortype	2491909
Flx_degfact_2	2517893
FpX_factor	4431305
ZX_factmod_init	4479371
Flx_oneroot_pre	4545101
Flx_factor_deg2	4561252
Flx_oneroot_pre_i	4588079
split_Flx_cut_out_roots	4889318
split_init	4897565
Flx_nbroots	4955842
split_moveto_done	5281288
split_add	5281302
Flx_simplefact_Cantor	5352984
vddf_to_simplefact	5353124
Flx_factor_squarefree_pre	7322611
Flx_degfact	7867042
Flx_ddf_Shoup	9265120
Flx_factor_i	11610182
cmpGuGu	16634195
Flx_otherroot	18174034
Flx_roots_pre	29580423
Flx_quad_root	30567993
Fl_disc_bc	33059902

Generated by: LCOV version 2.0-1