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 30568-0d72d66ef5) Lines: 2215 2530 87.5 % Date: 2025-12-01 09:22:22 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	1634
divide_p_elt	2324
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3538
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24914
subFB_change	26404
bnf_build_cycgen	26726
genback	28812
add_principal_part	32173
expandext	32193
isprincipalfact	32193
bnf_compactfu	37429
RgM_expbitprec	48804
get_regulator	48900
bnf_build_units	50738
matbotidembs	55478
matenlarge	55478
get_random_ideal	55601
rnd_rel	55601
rnd_rel_seq	55601
_nfnewprec	57742
matbotid	62505
Buchall	62606
small_norm_prec	64032
primeneeded	64034
class_group_gen	64035
compute_invres	64035
getfu	64035
automorphism_perms	64036
nthideal	64036
extract_full_lattice	64043
automorphism_matrices	64096
add_cyclotomic_units	64108
delete_cache	64108
init_rel	64108
nfcyclotomicunits	64108
reallocate	64108
diagact_arch	64133
get_clg2	64133
buchall_end	65239
Buchall_param	65245
init_famat	65840
FBgen	66282
FB_aut_perm	66285
ballvol	66285
delete_FB	66285
subFBgen	66285
small_norm	66801
small_norm_seq	66801
assign_subFB	67038
clean_cols	93058
bad_check	96219
compute_R	96282
compute_multiple_of_R	121745
get_embs	122435
pre_allocate	122474
trim_list	122474
cleanarchunit	133915
init_GRHcheck	134696
free_GRHcheck	134700
nfsign_from_logarch	162321
isprincipal	174793
divide_p_id	185521
nf_cxlog_normalize	197126
modIm	204648
nfsign_tu	239974
nfsign_fu	241147
Fincke_Pohst_ideal	266645
Fincke_Pohst_ideal_both	266645
Fincke_Pohst_bound	266648
bnf_get_ga	271855
bnf_get_GD	276811
bnf_build_cheapfu	285487
bnf_has_fu	285774
bad_subFB	307666
triv_gen	464660
GRHchk	496648
compute_multiple_of_R_pivot	576095
get_log_embed	726334
cache_prime_dec	921635
set_rel_alpha	948911
rel_embed	1017466
red_mod_units	1107840
init_red_mod_units	1107841
tailres	1129896
dump_gen	1228059
fact_ok	1228572
get_norm_fact	1231501
RgC_expbitprec	1237111
isprincipalarch	1237113
SPLIT_i	1252846
fixarch	1306977
ZV_divrem	1392587
bnf_get_Ur	1392588
Ur_ZC_mul	1392589
split_ideal	1392589
get_pr_lists	1392653
recover_partFB	1392653
bnf_get_vbase	1392672
bnf_get_W	1397565
isprincipalall	1408973
SPLIT	1408997
prec_arch	1410781
GRHok	1533142
bnfisprincipal0	1841374
fact_update	2052477
act_arch	2057555
add	2250658
tailresback	2259770
set_fact	2316341
add_rel	2489454
bnf_get_B	2785195
bnf_get_C	2819773
expbitprec	2840405
add_to_fact	2920739
already_known	2970244
add_rel_i	2974371
cleanarch	3071814
divide_p_quo	5437764
divide_p	5625608
addRe_modIm	6907357
get_fs	7515602
store	9465417
factorgen	16944316
can_factor	18356860
step	28418934

Generated by: LCOV version 1.16