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 30603-c72b2decfc) Lines: 1308 1426 91.7 % Date: 2026-01-07 09:21:48 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	15048
F2x_degfact_2	19675
F2xq_frobtrace	22788
F2x_Berlekamp_ker	23322
split_squares	31507
split_nonsquares	31508
F2x_edf_simple	33426
F2x_Berlekamp_i	35387
F2x_split_Berlekamp	35826
Flx_oneroot_split_pre	41627
FpX_degfact	47947
Flx_is_totally_split_i	81347
Flx_is_totally_split	81354
Flx_root_mod_2	94298
FpX_nbroots	153946
FpX_roots_mult	226478
FpX_oneroot	234087
FpX_split_part	250269
F2x_Cantor_i	302821
F2x_factor_Cantor	302821
F2x_factor_squarefree	338194
Flx_factor_squarefree	346578
FpX_factor_squarefree	347326
F2x_factor_Shoup	353899
F2x_ddf_simple	353905
trivial_fact	354050
Flx_edf_simple	410195
split_todo	426570
Flx_cubic_root	427977
FpX_roots	433524
F2x_quad_factortype	471566
split_done	476942
split_add_done	520963
ZX_rootmod_init	667611
Flx_nbfact	668843
Flx_nbfact_pre	668844
Flx_nbfact_Frobenius_pre	668850
Flx_factor	705551
Flx_edf	741212
F2x_factor_2	1186663
F2x_factor_deg2	1206353
Flx_edf_rec	1391632
Flx_nbfact_by_degree	1454277
F2x_factor_i	1544564
Flx_factor_Cantor	1607011
Flx_factor_Shoup	1679864
FE_concat	1910734
Flx_factor_2	2035688
ddf_to_nbfact	2350380
Flx_quad_factortype	2488984
Flx_degfact_2	2515054
FpX_factor	4424662
Flx_oneroot_pre	4424995
Flx_oneroot_pre_i	4466589
ZX_factmod_init	4472740
Flx_factor_deg2	4550710
Flx_nbroots	4767540
split_Flx_cut_out_roots	4875822
split_init	4884883
split_add	5260659
split_moveto_done	5261770
Flx_simplefact_Cantor	5347941
vddf_to_simplefact	5349198
Flx_factor_squarefree_pre	7304478
Flx_degfact	7859781
Flx_ddf_Shoup	9231787
Flx_factor_i	11584168
Flx_otherroot	16422824
cmpGuGu	16442274
Flx_roots_pre	26845916
Flx_quad_root	27706798
Fl_disc_bc	30191186

Generated by: LCOV version 1.16