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 - buch2.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30735-65f72320ad) Lines: 2218 2538 87.4 % Date: 2026-03-16 09:23:47 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62592
Buchall_deg1	1204
Buchall_param	65236
FB_aut_perm	66308
FBgen	66306
Fincke_Pohst_bound	267551
Fincke_Pohst_ideal	267551
Fincke_Pohst_ideal_both	267550
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496718
GRHok	2304017
RgC_expbitprec	1237089
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408954
SPLIT_i	1252978
SUnits_archclean	77
Ur_ZC_mul	1392546
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392547
ZV_mul	7332
_nfnewprec	57793
act_arch	2057471
add	2250547
addRe_modIm	6907279
add_cyclotomic_units	64131
add_principal_part	32327
add_rel	2502616
add_rel_i	2987553
add_to_fact	2933530
already_known	2983372
assign_subFB	67043
automorphism_matrices	64118
automorphism_perms	64055
bad_check	96195
bad_subFB	308239
ballvol	66306
be_honest	7
bnf_build_cheapfu	285490
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785114
bnf_get_C	2819984
bnf_get_GD	276789
bnf_get_Ur	1392546
bnf_get_W	1397523
bnf_get_ga	271833
bnf_get_vbase	1392630
bnf_has_fu	285776
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841335
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65261
cache_prime_dec	921994
can_factor	18795005
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64057
clean_cols	93268
cleanarch	3071777
cleanarchunit	133978
compute_R	96257
compute_invres	64057
compute_multiple_of_R	121795
compute_multiple_of_R_pivot	578340
dbg_newrel	0
delete_FB	66308
delete_cache	64131
diagact_arch	64154
divide_p	5686699
divide_p_elt	2382
divide_p_id	185467
divide_p_quo	5498853
dump_gen	1228037
err_units	0
expand	0
expandext	32348
expbitprec	2840438
extract_full_lattice	64064
fact_ok	1228537
fact_update	2124705
factorgen	17382396
fixarch	1306998
free_GRHcheck	186234
genback	28784
get_archclean	40
get_clg2	64154
get_embs	122492
get_fs	7515909
get_log_embed	726152
get_norm_fact	1231478
get_norm_fact_primes	69
get_pr_lists	1392611
get_random_ideal	56522
get_regulator	48941
get_y	69
getfu	64057
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	186231
init_famat	65861
init_red_mod_units	1107813
init_rel	64131
inv_fact	0
isprincipal	174779
isprincipalall	1409084
isprincipalarch	1237092
isprincipalfact	32348
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62535
matbotidembs	55397
matenlarge	55399
modIm	204729
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64131
nfsign_from_logarch	162326
nfsign_fu	241149
nfsign_tu	239988
nfsign_units	35
not_given	396
nthideal	64057
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123386
prec_arch	1410880
primeneeded	64057
reallocate	64131
recover_partFB	1392611
red_mod_units	1107813
rel_embed	1017699
rnd_rel	56522
rnd_rel_par	0
rnd_rel_seq	56523
set_fact	2329435
set_rel_alpha	949340
signunits	7
small_norm	66789
small_norm_par	0
small_norm_prec	64045
small_norm_seq	66789
split_ideal	1392547
step	29167713
store	9537573
subFB_change	26616
subFBgen	66307
tailres	1130193
tailresback	2260378
trim_list	123386
triv_gen	464660
try_elt	1693
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16