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

Generated by: LCOV version 1.16