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 - language - default.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30735-65f72320ad) Lines: 379 589 64.3 % Date: 2026-03-14 09:23:49 Functions: 45 70 64.3 % Legend: Lines: hit not hit

Function Name	Hit count
TeX_define	0
TeX_define2	0
call_f2	945
compare_name	0
default0	927
default_gp_data	1883
defaults_list	0
delete_dirs	7492
delete_path	3746
err_intarray	21
expand_path	3746
get_int	44
get_sep	1641
get_uint	1208
getrealprecision	0
gp_get_color	28
init_fmt	1883
init_graphs	1883
init_help	1883
init_hist	1897
init_path	3766
init_pp	1883
my_int	1252
open_logfile	0
pari_close_paths	1873
pari_default_path	1883
pari_init_paths	1873
parse_intarray	39
sd_PATH	0
sd_TeXstyle	0
sd_colors	4
sd_compatible	0
sd_datadir	28
sd_debug	28
sd_debugfiles	21
sd_debugmem	0
sd_factor_add_primes	0
sd_factor_proven	0
sd_factorlimit	0
sd_format	7
sd_histsize	14
sd_intarray	39
sd_log	0
sd_logfile	0
sd_nbthreads	7
sd_new_galois_format	28
sd_output	0
sd_parisize	405
sd_parisizemax	0
sd_path	0
sd_prettyprinter	0
sd_primelimit	14
sd_realbitprecision	21
sd_realprecision	465
sd_res	692
sd_secure	0
sd_seriesprecision	35
sd_simplify	0
sd_size	411
sd_sopath	0
sd_strictargs	7
sd_strictmatch	0
sd_string	4
sd_threadsize	6
sd_threadsizemax	0
sd_toggle	44
sd_ulong	311
sd_ulong_init	1208
setdefault	945
setrealprecision	0

Generated by: LCOV version 1.16