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 30616-7aa4fb0184) Lines: 2218 2538 87.4 % Date: 2026-01-17 09:22:32 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Fincke_Pohst_ideal_par	0
bnfinit_FP_worker	0
bnrnewprec_shallow	0
dbg_newrel	0
err_units	0
expand	0
i2print	0
inv_fact	0
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
pack_FB	0
rnd_rel_par	0
small_norm_par	0
unpack_FB	0
wr_rel	0
be_honest	7
bnfnewprec	7
bnrnewprec	7
signunits	7
bnf_build_matalpha	20
makematal	20
nfsign_units	35
get_archclean	40
bnftestprimes	63
get_norm_fact_primes	69
get_y	69
bnf_compactfu_mat	70
myprecdbl	73
SUnits_archclean	77
chinese_unit	94
log2Mbound	94
log2fubound	94
vec_chinese_units	94
bnfnewprec_shallow	97
RgV_is1	105
ZM_remove_unused	164
chinese_unit_slice	274
chinese_unit_worker	274
not_given	396
Buchall_deg1	1204
FlxqX_chinese_unit	1379
try_elt	1827
divide_p_elt	2553
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3523
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26655
bnf_build_cycgen	26725
genback	28784
add_principal_part	31963
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48893
bnf_build_units	50745
matbotidembs	55483
matenlarge	55484
get_random_ideal	56576
rnd_rel	56576
rnd_rel_seq	56576
_nfnewprec	57727
matbotid	62494
Buchall	62575
automorphism_perms	64006
compute_invres	64006
small_norm_prec	64006
primeneeded	64007
class_group_gen	64008
getfu	64008
nthideal	64008
extract_full_lattice	64015
automorphism_matrices	64069
add_cyclotomic_units	64090
delete_cache	64090
init_rel	64090
nfcyclotomicunits	64090
reallocate	64090
diagact_arch	64104
get_clg2	64104
buchall_end	65212
Buchall_param	65214
init_famat	65812
ballvol	66264
FBgen	66266
subFBgen	66266
FB_aut_perm	66267
delete_FB	66267
small_norm	66773
small_norm_seq	66773
assign_subFB	67032
clean_cols	93214
bad_check	96309
compute_R	96372
compute_multiple_of_R	121879
get_embs	122535
pre_allocate	123431
trim_list	123431
cleanarchunit	133879
init_GRHcheck	134439
free_GRHcheck	134441
nfsign_from_logarch	162319
isprincipal	174779
divide_p_id	185478
nf_cxlog_normalize	197126
modIm	204623
nfsign_tu	239982
nfsign_fu	241150
Fincke_Pohst_bound	267618
Fincke_Pohst_ideal	267620
Fincke_Pohst_ideal_both	267620
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285473
bnf_has_fu	285760
bad_subFB	308316
triv_gen	464660
GRHchk	496428
compute_multiple_of_R_pivot	578317
get_log_embed	726082
cache_prime_dec	921310
set_rel_alpha	948713
rel_embed	1017385
init_red_mod_units	1107812
red_mod_units	1107812
tailres	1129406
dump_gen	1228038
fact_ok	1228540
get_norm_fact	1231480
RgC_expbitprec	1237094
isprincipalarch	1237094
SPLIT_i	1252977
fixarch	1306947
split_ideal	1392542
Ur_ZC_mul	1392548
ZV_divrem	1392548
bnf_get_Ur	1392548
recover_partFB	1392606
get_pr_lists	1392608
bnf_get_vbase	1392625
bnf_get_W	1397518
isprincipalall	1408720
SPLIT	1408958
prec_arch	1410514
GRHok	1530921
bnfisprincipal0	1841333
act_arch	2057336
fact_update	2124176
add	2250566
tailresback	2258800
set_fact	2329695
add_rel	2502731
bnf_get_B	2785109
bnf_get_C	2819252
expbitprec	2840346
add_to_fact	2933896
already_known	2983394
add_rel_i	2987537
cleanarch	3071530
divide_p_quo	5498888
divide_p	5686909
addRe_modIm	6906947
get_fs	7512727
store	9538376
factorgen	17382044
can_factor	18794826
step	29163617

Generated by: LCOV version 1.16