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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31057-89c4d54ba6) Lines: 87.4 % 2541 2220 Test Date: 2026-07-25 17:02:42 Functions: 90.3 % 176 159 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	1668
divide_p_elt	2344
bnfinit0	2646
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3523
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26533
bnf_build_cycgen	26726
genback	28784
add_principal_part	32327
expandext	32348
isprincipalfact	32348
bnf_compactfu	37422
RgM_expbitprec	48853
get_regulator	48950
bnf_build_units	50745
matbotidembs	55099
matenlarge	55099
get_random_ideal	56173
rnd_rel	56173
rnd_rel_seq	56173
_nfnewprec	57788
matbotid	62540
Buchall	62636
automorphism_perms	64064
class_group_gen	64064
compute_invres	64064
getfu	64064
nthideal	64064
primeneeded	64064
small_norm_prec	64064
extract_full_lattice	64071
automorphism_matrices	64127
add_cyclotomic_units	64136
delete_cache	64136
init_rel	64136
nfcyclotomicunits	64136
reallocate	64136
diagact_arch	64161
get_clg2	64161
buchall_end	65268
Buchall_param	65282
init_famat	65868
FB_aut_perm	66313
FBgen	66313
ballvol	66313
delete_FB	66313
subFBgen	66313
small_norm	66857
small_norm_seq	66857
assign_subFB	66964
clean_cols	93206
bad_check	95968
compute_R	96031
compute_multiple_of_R	121604
get_embs	122198
pre_allocate	123102
trim_list	123102
cleanarchunit	133994
nfsign_from_logarch	162330
isprincipal	174779
divide_p_id	185887
free_GRHcheck	186440
init_GRHcheck	186440
nf_cxlog_normalize	199199
modIm	204750
nfsign_tu	240002
nfsign_fu	241178
Fincke_Pohst_bound	267323
Fincke_Pohst_ideal	267323
Fincke_Pohst_ideal_both	267323
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285502
bnf_has_fu	285789
bad_subFB	308078
triv_gen	464919
GRHchk	496776
compute_multiple_of_R_pivot	573286
get_log_embed	726035
cache_prime_dec	922112
set_rel_alpha	948718
rel_embed	1017009
init_red_mod_units	1109359
red_mod_units	1109359
tailres	1130325
dump_gen	1229586
fact_ok	1230087
get_norm_fact	1233029
RgC_expbitprec	1238642
isprincipalarch	1238642
SPLIT_i	1254117
fixarch	1308558
Ur_ZC_mul	1394097
ZV_divrem	1394097
bnf_get_Ur	1394097
split_ideal	1394097
get_pr_lists	1394160
recover_partFB	1394160
bnf_get_vbase	1394180
bnf_get_W	1399073
SPLIT	1410505
isprincipalall	1410631
prec_arch	1412433
bnfisprincipal0	1843140
act_arch	2059038
fact_update	2124138
add	2252458
tailresback	2260650
GRHok	2305868
set_fact	2329230
add_rel	2502441
bnf_get_B	2788214
bnf_get_C	2823084
expbitprec	2843552
add_to_fact	2933613
already_known	2982492
add_rel_i	2986685
cleanarch	3076975
divide_p_quo	5498195
divide_p	5686426
addRe_modIm	6917655
get_fs	7518798
store	9537438
factorgen	17385040
can_factor	18799277
step	29165365

Generated by: LCOV version 2.0-1