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 30617-dd5c93fb0e) Lines: 2218 2538 87.4 % Date: 2026-01-19 09:22:13 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62581
Buchall_deg1	1204
Buchall_param	65221
FB_aut_perm	66267
FBgen	66266
Fincke_Pohst_bound	267649
Fincke_Pohst_ideal	267649
Fincke_Pohst_ideal_both	267649
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1378
GRHchk	496423
GRHok	1530922
RgC_expbitprec	1237092
RgM_expbitprec	48797
RgV_is1	105
SPLIT	1408954
SPLIT_i	1252979
SUnits_archclean	77
Ur_ZC_mul	1392549
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392549
ZV_mul	7332
_nfnewprec	57727
act_arch	2057340
add	2250567
addRe_modIm	6906918
add_cyclotomic_units	64090
add_principal_part	31963
add_rel	2502741
add_rel_i	2987631
add_to_fact	2933853
already_known	2983490
assign_subFB	67043
automorphism_matrices	64067
automorphism_perms	64005
bad_check	96344
bad_subFB	308355
ballvol	66267
be_honest	7
bnf_build_cheapfu	285468
bnf_build_cycgen	26725
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785112
bnf_get_C	2819252
bnf_get_GD	276789
bnf_get_Ur	1392549
bnf_get_W	1397520
bnf_get_ga	271833
bnf_get_vbase	1392627
bnf_has_fu	285755
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841335
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65212
cache_prime_dec	921308
can_factor	18795423
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64008
clean_cols	93279
cleanarch	3071523
cleanarchunit	133880
compute_R	96408
compute_invres	64008
compute_multiple_of_R	121911
compute_multiple_of_R_pivot	579912
dbg_newrel	0
delete_FB	66267
delete_cache	64090
diagact_arch	64104
divide_p	5686983
divide_p_elt	2562
divide_p_id	185477
divide_p_quo	5498949
dump_gen	1228037
err_units	0
expand	0
expandext	31983
expbitprec	2840335
extract_full_lattice	64014
fact_ok	1228539
fact_update	2124163
factorgen	17382655
fixarch	1306945
free_GRHcheck	134441
genback	28784
get_archclean	40
get_clg2	64104
get_embs	122576
get_fs	7512458
get_log_embed	726107
get_norm_fact	1231481
get_norm_fact_primes	69
get_pr_lists	1392608
get_random_ideal	56620
get_regulator	48894
get_y	69
getfu	64008
i2print	0
idealHNF_mulred	3524
idealmulpowprime2	4761
init_GRHcheck	134438
init_famat	65812
init_red_mod_units	1107811
init_rel	64090
inv_fact	0
isprincipal	174779
isprincipalall	1408720
isprincipalarch	1237093
isprincipalfact	31983
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62494
matbotidembs	55523
matenlarge	55522
modIm	204627
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64090
nfsign_from_logarch	162322
nfsign_fu	241153
nfsign_tu	239978
nfsign_units	35
not_given	396
nthideal	64008
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123469
prec_arch	1410513
primeneeded	64008
reallocate	64090
recover_partFB	1392608
red_mod_units	1107813
rel_embed	1017525
rnd_rel	56619
rnd_rel_par	0
rnd_rel_seq	56619
set_fact	2329680
set_rel_alpha	948845
signunits	7
small_norm	66767
small_norm_par	0
small_norm_prec	64001
small_norm_seq	66767
split_ideal	1392544
step	29164599
store	9538397
subFB_change	26669
subFBgen	66267
tailres	1129393
tailresback	2258797
trim_list	123469
triv_gen	464660
try_elt	1826
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16