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 30571-c0dfe82732) Lines: 2215 2530 87.5 % Date: 2025-12-08 09:22:00 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	1700
divide_p_elt	2416
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	24915
subFB_change	26388
bnf_build_cycgen	26726
genback	28812
add_principal_part	32172
expandext	32194
isprincipalfact	32194
bnf_compactfu	37428
RgM_expbitprec	48804
get_regulator	48901
bnf_build_units	50738
matbotidembs	55481
matenlarge	55481
rnd_rel	55591
rnd_rel_seq	55591
get_random_ideal	55592
_nfnewprec	57737
matbotid	62509
Buchall	62608
compute_invres	64035
small_norm_prec	64035
automorphism_perms	64036
class_group_gen	64036
getfu	64036
nthideal	64036
primeneeded	64036
extract_full_lattice	64043
automorphism_matrices	64096
init_rel	64111
reallocate	64111
add_cyclotomic_units	64112
delete_cache	64112
nfcyclotomicunits	64112
diagact_arch	64133
get_clg2	64133
buchall_end	65240
Buchall_param	65247
init_famat	65840
ballvol	66286
subFBgen	66286
FBgen	66287
delete_FB	66288
FB_aut_perm	66289
small_norm	66815
small_norm_seq	66815
assign_subFB	67040
clean_cols	93050
bad_check	96224
compute_R	96286
compute_multiple_of_R	121754
get_embs	122443
pre_allocate	122483
trim_list	122483
cleanarchunit	133916
init_GRHcheck	134698
free_GRHcheck	134701
nfsign_from_logarch	162323
isprincipal	174793
divide_p_id	185521
nf_cxlog_normalize	197126
modIm	204638
nfsign_tu	239969
nfsign_fu	241147
Fincke_Pohst_bound	266654
Fincke_Pohst_ideal	266660
Fincke_Pohst_ideal_both	266660
bnf_get_ga	271855
bnf_get_GD	276811
bnf_build_cheapfu	285491
bnf_has_fu	285777
bad_subFB	307675
triv_gen	464660
GRHchk	496656
compute_multiple_of_R_pivot	577000
get_log_embed	726393
cache_prime_dec	921662
set_rel_alpha	948978
rel_embed	1017646
init_red_mod_units	1107841
red_mod_units	1107841
tailres	1129949
dump_gen	1228058
fact_ok	1228573
get_norm_fact	1231499
RgC_expbitprec	1237112
isprincipalarch	1237115
SPLIT_i	1252846
fixarch	1306974
Ur_ZC_mul	1392588
ZV_divrem	1392588
bnf_get_Ur	1392588
split_ideal	1392588
get_pr_lists	1392652
recover_partFB	1392652
bnf_get_vbase	1392671
bnf_get_W	1397564
isprincipalall	1408973
SPLIT	1408998
prec_arch	1410783
GRHok	1533172
bnfisprincipal0	1841376
fact_update	2052893
act_arch	2057562
add	2250665
tailresback	2259890
set_fact	2316499
add_rel	2489623
bnf_get_B	2785191
bnf_get_C	2819774
expbitprec	2840402
add_to_fact	2920852
already_known	2970537
add_rel_i	2974674
cleanarch	3071841
divide_p_quo	5437879
divide_p	5625815
addRe_modIm	6907427
get_fs	7516599
store	9465827
factorgen	16944588
can_factor	18357245
step	28420436

Generated by: LCOV version 1.16