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 30543-4febeb1110) Lines: 1308 1426 91.7 % Date: 2025-11-10 09:22:37 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	15039
F2x_degfact_2	19691
F2xq_frobtrace	22816
F2x_Berlekamp_ker	23316
split_nonsquares	31764
split_squares	31764
F2x_edf_simple	33402
F2x_Berlekamp_i	35378
F2x_split_Berlekamp	35815
Flx_oneroot_split_pre	40408
FpX_degfact	47947
Flx_is_totally_split_i	81346
Flx_is_totally_split	81353
Flx_root_mod_2	94296
FpX_nbroots	153946
FpX_roots_mult	226478
FpX_oneroot	234318
FpX_split_part	250291
F2x_Cantor_i	302973
F2x_factor_Cantor	302973
F2x_factor_squarefree	338336
Flx_factor_squarefree	346578
FpX_factor_squarefree	347326
trivial_fact	353917
F2x_factor_Shoup	354073
F2x_ddf_simple	354078
Flx_edf_simple	410955
split_todo	428575
FpX_roots	433548
Flx_cubic_root	434871
F2x_quad_factortype	471650
split_done	482452
split_add_done	526482
ZX_rootmod_init	667866
Flx_nbfact_Frobenius_pre	670813
Flx_nbfact	670815
Flx_nbfact_pre	670815
Flx_factor	709508
Flx_edf	743122
F2x_factor_2	1186908
F2x_factor_deg2	1206613
Flx_edf_rec	1395384
Flx_nbfact_by_degree	1454869
F2x_factor_i	1544970
Flx_factor_Cantor	1609247
Flx_factor_Shoup	1682121
FE_concat	1913122
Flx_factor_2	2037130
ddf_to_nbfact	2354580
Flx_quad_factortype	2489446
Flx_degfact_2	2515431
FpX_factor	4424833
Flx_oneroot_pre	4449049
ZX_factmod_init	4472906
Flx_oneroot_pre_i	4489408
Flx_factor_deg2	4552482
Flx_nbroots	4769262
split_Flx_cut_out_roots	5025038
split_init	5034146
Flx_simplefact_Cantor	5345841
vddf_to_simplefact	5347867
split_add	5412400
split_moveto_done	5412856
Flx_factor_squarefree_pre	7304285
Flx_degfact	7858072
Flx_ddf_Shoup	9233789
Flx_factor_i	11586025
Flx_otherroot	15644141
cmpGuGu	16452892
Flx_roots_pre	25868347
Flx_quad_root	26584799
Fl_disc_bc	29064921

Generated by: LCOV version 1.16