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 30531-d68fd7cb7d) Lines: 1308 1426 91.7 % Date: 2025-10-16 09:22:45 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
FpX_is_irred	112
good_root_of_unity	154
FpX_cubic_root	168
FpX_ispower	168
F2x_is_irred	238
FpX_edf	431
all_roots_mod_p	600
FpX_factor_Cantor	905
FpX_factor_Shoup	1004
FpX_ddf_Shoup	1018
FpX_edf_rec	1036
Flx_is_irred	1057
Flx_isirred_Cantor	1078
FpX_oneroot_split	1176
Flx_roots	1372
FpX_factor_2	1485
FpX_factor_deg2	1506
FpX_factor_Yun	1709
Flx_Xn1	2132
Flx_Xnm1	2237
FpX_factor_i	2425
Flx_oneroot	2499
Flx_ispower	3444
FpX_ddf_degree	4256
FpX_oneroot_i	5554
FpX_roots_i	8247
FpX_otherroot	10010
FpX_quad_root	14795
F2x_factor	15048
F2x_degfact_2	19691
F2xq_frobtrace	22812
F2x_Berlekamp_ker	23322
split_squares	31763
split_nonsquares	31764
F2x_edf_simple	33403
F2x_Berlekamp_i	35385
F2x_split_Berlekamp	35825
Flx_oneroot_split_pre	40401
FpX_degfact	47947
Flx_is_totally_split_i	81347
Flx_is_totally_split	81354
Flx_root_mod_2	94296
FpX_nbroots	153946
FpX_roots_mult	226478
FpX_oneroot	234318
FpX_split_part	250286
F2x_Cantor_i	302987
F2x_factor_Cantor	302987
F2x_factor_squarefree	338356
Flx_factor_squarefree	346578
FpX_factor_squarefree	347326
trivial_fact	353914
F2x_factor_Shoup	354087
F2x_ddf_simple	354092
Flx_edf_simple	410894
split_todo	428591
FpX_roots	433549
Flx_cubic_root	434822
F2x_quad_factortype	471658
split_done	482529
split_add_done	526564
ZX_rootmod_init	667867
Flx_nbfact	670810
Flx_nbfact_pre	670811
Flx_nbfact_Frobenius_pre	670815
Flx_factor	709476
Flx_edf	743172
F2x_factor_2	1186954
F2x_factor_deg2	1206662
Flx_edf_rec	1395390
Flx_nbfact_by_degree	1454843
F2x_factor_i	1545030
Flx_factor_Cantor	1609249
Flx_factor_Shoup	1682110
FE_concat	1913141
Flx_factor_2	2037151
ddf_to_nbfact	2354573
Flx_quad_factortype	2489564
Flx_degfact_2	2515620
FpX_factor	4424917
Flx_oneroot_pre	4447321
ZX_factmod_init	4472983
Flx_oneroot_pre_i	4487292
Flx_factor_deg2	4552694
Flx_nbroots	4768849
split_Flx_cut_out_roots	5025594
split_init	5034733
Flx_simplefact_Cantor	5345480
vddf_to_simplefact	5347655
split_add	5412938
split_moveto_done	5413169
Flx_factor_squarefree_pre	7303822
Flx_degfact	7857954
Flx_ddf_Shoup	9232262
Flx_factor_i	11585943
Flx_otherroot	15637643
cmpGuGu	16452360
Flx_roots_pre	25860595
Flx_quad_root	26579797
Fl_disc_bc	29065235

Generated by: LCOV version 1.16