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 30672-116f3d5b0e) Lines: 1309 1426 91.8 % Date: 2026-02-07 09:23:42 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	2244
FpX_factor_i	2429
Flx_oneroot	2520
Flx_ispower	3444
FpX_ddf_degree	4256
FpX_oneroot_i	5322
FpX_roots_i	8247
FpX_otherroot	10010
FpX_quad_root	14676
F2x_factor	15046
F2x_degfact_2	19677
F2xq_frobtrace	22825
F2x_Berlekamp_ker	23322
split_squares	31509
split_nonsquares	31510
F2x_edf_simple	33423
F2x_Berlekamp_i	35385
F2x_split_Berlekamp	35826
Flx_oneroot_split_pre	41628
FpX_degfact	47947
Flx_is_totally_split_i	81346
Flx_is_totally_split	81353
Flx_root_mod_2	94300
FpX_nbroots	153946
FpX_roots_mult	226478
FpX_oneroot	234087
FpX_split_part	250270
F2x_Cantor_i	302799
F2x_factor_Cantor	302799
F2x_factor_squarefree	338171
Flx_factor_squarefree	346578
FpX_factor_squarefree	347326
F2x_factor_Shoup	353880
F2x_ddf_simple	353884
trivial_fact	354044
Flx_edf_simple	410254
split_todo	426677
Flx_cubic_root	428040
FpX_roots	433524
F2x_quad_factortype	471556
split_done	477014
split_add_done	521035
ZX_rootmod_init	667611
Flx_nbfact	669234
Flx_nbfact_pre	669234
Flx_nbfact_Frobenius_pre	669236
Flx_factor	705716
Flx_edf	741225
F2x_factor_2	1186627
F2x_factor_deg2	1206319
Flx_edf_rec	1391647
Flx_nbfact_by_degree	1454298
F2x_factor_i	1544509
Flx_factor_Cantor	1607150
Flx_factor_Shoup	1680037
FE_concat	1910858
Flx_factor_2	2035688
ddf_to_nbfact	2350919
Flx_quad_factortype	2490062
Flx_degfact_2	2516103
FpX_factor	4424659
Flx_oneroot_pre	4428125
Flx_oneroot_pre_i	4469697
ZX_factmod_init	4472737
Flx_factor_deg2	4551699
Flx_nbroots	4767553
split_Flx_cut_out_roots	4875659
split_init	4884633
split_add	5261508
split_moveto_done	5262273
Flx_simplefact_Cantor	5348601
vddf_to_simplefact	5349359
Flx_factor_squarefree_pre	7305088
Flx_degfact	7861033
Flx_ddf_Shoup	9234046
Flx_factor_i	11585786
Flx_otherroot	16439444
cmpGuGu	16443005
Flx_roots_pre	26909330
Flx_quad_root	27774208
Fl_disc_bc	30256316

Generated by: LCOV version 1.16