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 30744-52374ab6cf) Lines: 2218 2538 87.4 % Date: 2026-03-17 09:26:37 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	1711
divide_p_elt	2393
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3527
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26624
bnf_build_cycgen	26726
genback	28784
add_principal_part	32327
expandext	32348
isprincipalfact	32348
bnf_compactfu	37415
RgM_expbitprec	48846
get_regulator	48942
bnf_build_units	50745
matbotidembs	55408
matenlarge	55408
get_random_ideal	56529
rnd_rel	56529
rnd_rel_seq	56529
_nfnewprec	57792
matbotid	62536
Buchall	62610
small_norm_prec	64044
class_group_gen	64055
getfu	64056
nthideal	64056
primeneeded	64056
automorphism_perms	64057
compute_invres	64057
extract_full_lattice	64062
automorphism_matrices	64118
add_cyclotomic_units	64132
delete_cache	64132
init_rel	64132
nfcyclotomicunits	64132
reallocate	64132
diagact_arch	64153
get_clg2	64153
Buchall_param	65255
buchall_end	65261
init_famat	65861
ballvol	66307
FB_aut_perm	66308
subFBgen	66308
FBgen	66309
delete_FB	66309
small_norm	66793
small_norm_seq	66793
assign_subFB	67044
clean_cols	93273
bad_check	96214
compute_R	96278
compute_multiple_of_R	121801
get_embs	122503
pre_allocate	123396
trim_list	123396
cleanarchunit	133977
nfsign_from_logarch	162323
isprincipal	174779
divide_p_id	185470
init_GRHcheck	186232
free_GRHcheck	186233
nf_cxlog_normalize	197126
modIm	204726
nfsign_tu	239980
nfsign_fu	241167
Fincke_Pohst_bound	267558
Fincke_Pohst_ideal	267562
Fincke_Pohst_ideal_both	267562
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285492
bnf_has_fu	285779
bad_subFB	308271
triv_gen	464660
GRHchk	496724
compute_multiple_of_R_pivot	578355
get_log_embed	726183
cache_prime_dec	921975
set_rel_alpha	949345
rel_embed	1017734
init_red_mod_units	1107812
red_mod_units	1107813
tailres	1130162
dump_gen	1228036
fact_ok	1228538
get_norm_fact	1231479
isprincipalarch	1237094
RgC_expbitprec	1237095
SPLIT_i	1252981
fixarch	1307000
split_ideal	1392543
ZV_divrem	1392547
Ur_ZC_mul	1392548
bnf_get_Ur	1392548
get_pr_lists	1392606
recover_partFB	1392606
bnf_get_vbase	1392626
bnf_get_W	1397519
SPLIT	1408951
isprincipalall	1409085
prec_arch	1410881
bnfisprincipal0	1841332
act_arch	2057482
fact_update	2124535
add	2250567
tailresback	2260320
GRHok	2304064
set_fact	2329470
add_rel	2502658
bnf_get_B	2785107
bnf_get_C	2819983
expbitprec	2840444
add_to_fact	2933586
already_known	2983441
add_rel_i	2987623
cleanarch	3071786
divide_p_quo	5498857
divide_p	5686714
addRe_modIm	6907287
get_fs	7516729
store	9537663
factorgen	17381934
can_factor	18794616
step	29167239

Generated by: LCOV version 1.16