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 30584-b9873745ba) Lines: 2215 2530 87.5 % Date: 2025-12-21 09:21:02 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	1665
divide_p_elt	2368
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3535
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24915
subFB_change	26418
bnf_build_cycgen	26724
genback	28784
add_principal_part	32173
expandext	32194
isprincipalfact	32194
bnf_compactfu	37413
RgM_expbitprec	48790
get_regulator	48887
bnf_build_units	50738
matbotidembs	55493
matenlarge	55493
get_random_ideal	55602
rnd_rel	55602
rnd_rel_seq	55602
_nfnewprec	57726
matbotid	62493
Buchall	62578
small_norm_prec	63999
automorphism_perms	64007
class_group_gen	64008
compute_invres	64008
getfu	64008
nthideal	64008
primeneeded	64008
extract_full_lattice	64015
automorphism_matrices	64070
init_rel	64081
reallocate	64081
add_cyclotomic_units	64082
delete_cache	64082
nfcyclotomicunits	64082
diagact_arch	64101
get_clg2	64101
buchall_end	65212
Buchall_param	65216
init_famat	65812
FBgen	66258
FB_aut_perm	66259
ballvol	66259
delete_FB	66259
subFBgen	66259
small_norm	66765
small_norm_seq	66765
assign_subFB	67020
clean_cols	93079
bad_check	96184
compute_R	96244
compute_multiple_of_R	121714
get_embs	122404
pre_allocate	122441
trim_list	122442
cleanarchunit	133874
init_GRHcheck	134416
free_GRHcheck	134428
nfsign_from_logarch	162327
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204618
nfsign_tu	239982
nfsign_fu	241162
Fincke_Pohst_bound	266570
Fincke_Pohst_ideal	266572
Fincke_Pohst_ideal_both	266572
bnf_get_ga	271827
bnf_get_GD	276783
bnf_build_cheapfu	285486
bnf_has_fu	285773
bad_subFB	307581
triv_gen	464660
GRHchk	496420
compute_multiple_of_R_pivot	577254
get_log_embed	726109
cache_prime_dec	921262
set_rel_alpha	948685
rel_embed	1017165
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129402
dump_gen	1228030
fact_ok	1228547
get_norm_fact	1231475
isprincipalarch	1237083
RgC_expbitprec	1237086
SPLIT_i	1252846
fixarch	1306932
split_ideal	1392543
Ur_ZC_mul	1392549
bnf_get_Ur	1392549
ZV_divrem	1392551
get_pr_lists	1392606
recover_partFB	1392607
bnf_get_vbase	1392626
bnf_get_W	1397519
isprincipalall	1408931
SPLIT	1408957
prec_arch	1410723
GRHok	1530814
bnfisprincipal0	1841333
fact_update	2051923
act_arch	2057286
add	2250472
tailresback	2258790
set_fact	2315395
add_rel	2488448
bnf_get_B	2785109
bnf_get_C	2819670
expbitprec	2840323
add_to_fact	2919751
already_known	2968866
add_rel_i	2973006
cleanarch	3071520
divide_p_quo	5436000
divide_p	5623845
addRe_modIm	6906904
get_fs	7512532
store	9461793
factorgen	16942742
can_factor	18355278
step	28415559

Generated by: LCOV version 1.16