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) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30773-2078653b96) Lines: 1308 1426 91.7 % Date: 2026-04-02 09:26:53 Functions: 114 124 91.9 % 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	2139
Flx_Xnm1	2249
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	15432
F2x_degfact_2	19677
F2xq_frobtrace	22945
F2x_Berlekamp_ker	23378
split_nonsquares	31528
split_squares	31528
F2x_edf_simple	33487
F2x_Berlekamp_i	35441
F2x_split_Berlekamp	35885
Flx_oneroot_split_pre	41624
FpX_degfact	47947
Flx_is_totally_split_i	81344
Flx_is_totally_split	81352
Flx_root_mod_2	94472
FpX_nbroots	153946
FpX_roots_mult	227549
FpX_oneroot	234115
FpX_split_part	250291
F2x_Cantor_i	303112
F2x_factor_Cantor	303112
F2x_factor_squarefree	338534
Flx_factor_squarefree	349112
FpX_factor_squarefree	349860
trivial_fact	354098
F2x_factor_Shoup	354272
F2x_ddf_simple	354277
Flx_edf_simple	411242
split_todo	426683
Flx_cubic_root	428059
FpX_roots	433747
F2x_quad_factortype	471696
split_done	477068
split_add_done	521135
ZX_rootmod_init	667862
Flx_nbfact	669399
Flx_nbfact_pre	669399
Flx_nbfact_Frobenius_pre	669400
Flx_factor	705546
Flx_edf	741268
F2x_factor_2	1187022
F2x_factor_deg2	1206713
Flx_edf_rec	1391828
Flx_nbfact_by_degree	1455922
F2x_factor_i	1545263
Flx_factor_Cantor	1607775
Flx_factor_Shoup	1681088
FE_concat	1911809
Flx_factor_2	2035862
ddf_to_nbfact	2352170
Flx_quad_factortype	2489207
Flx_degfact_2	2515293
FpX_factor	4425943
Flx_oneroot_pre	4430210
Flx_oneroot_pre_i	4471868
ZX_factmod_init	4474009
Flx_factor_deg2	4551112
Flx_nbroots	4768083
split_Flx_cut_out_roots	4875362
split_init	4884111
split_add	5261374
split_moveto_done	5261778
Flx_simplefact_Cantor	5350183
vddf_to_simplefact	5351671
Flx_factor_squarefree_pre	7309880
Flx_degfact	7862075
Flx_ddf_Shoup	9237483
Flx_factor_i	11587451
Flx_otherroot	16397481
cmpGuGu	16449877
Flx_roots_pre	26827754
Flx_quad_root	27697497
Fl_disc_bc	30180517

Generated by: LCOV version 1.16