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 30818-1d7bcd2a3c) Lines: 2218 2538 87.4 % Date: 2026-04-16 09:26:05 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62626
Buchall_deg1	1204
Buchall_param	65266
FB_aut_perm	66304
FBgen	66303
Fincke_Pohst_bound	267611
Fincke_Pohst_ideal	267618
Fincke_Pohst_ideal_both	267618
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496721
GRHok	2303970
RgC_expbitprec	1237090
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408955
SPLIT_i	1252979
SUnits_archclean	77
Ur_ZC_mul	1392550
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392550
ZV_mul	7332
_nfnewprec	57791
act_arch	2057471
add	2250542
addRe_modIm	6907211
add_cyclotomic_units	64127
add_principal_part	32327
add_rel	2502510
add_rel_i	2987489
add_to_fact	2933505
already_known	2983321
assign_subFB	67033
automorphism_matrices	64119
automorphism_perms	64055
bad_check	96270
bad_subFB	308278
ballvol	66304
be_honest	7
bnf_build_cheapfu	285480
bnf_build_cycgen	26725
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785116
bnf_get_C	2819987
bnf_get_GD	276790
bnf_get_Ur	1392550
bnf_get_W	1397526
bnf_get_ga	271834
bnf_get_vbase	1392633
bnf_has_fu	285767
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841335
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65261
cache_prime_dec	921993
can_factor	18794410
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64057
clean_cols	93309
cleanarch	3071757
cleanarchunit	133979
compute_R	96333
compute_invres	64056
compute_multiple_of_R	121856
compute_multiple_of_R_pivot	578493
dbg_newrel	0
delete_FB	66304
delete_cache	64127
diagact_arch	64154
divide_p	5686516
divide_p_elt	2292
divide_p_id	185469
divide_p_quo	5498765
dump_gen	1228037
err_units	0
expand	0
expandext	32348
expbitprec	2840440
extract_full_lattice	64064
fact_ok	1228541
fact_update	2124787
factorgen	17381826
fixarch	1306992
free_GRHcheck	186234
genback	28784
get_archclean	40
get_clg2	64154
get_embs	122558
get_fs	7515697
get_log_embed	726177
get_norm_fact	1231482
get_norm_fact_primes	69
get_pr_lists	1392613
get_random_ideal	56606
get_regulator	48942
get_y	69
getfu	64055
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	186230
init_famat	65861
init_red_mod_units	1107813
init_rel	64126
inv_fact	0
isprincipal	174779
isprincipalall	1409085
isprincipalarch	1237092
isprincipalfact	32348
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62531
matbotidembs	55467
matenlarge	55468
modIm	204727
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64127
nfsign_from_logarch	162325
nfsign_fu	241153
nfsign_tu	239987
nfsign_units	35
not_given	396
nthideal	64056
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123451
prec_arch	1410882
primeneeded	64057
reallocate	64126
recover_partFB	1392613
red_mod_units	1107813
rel_embed	1017796
rnd_rel	56605
rnd_rel_par	0
rnd_rel_seq	56605
set_fact	2329362
set_rel_alpha	949521
signunits	7
small_norm	66775
small_norm_par	0
small_norm_prec	64043
small_norm_seq	66775
split_ideal	1392550
step	29168141
store	9537217
subFB_change	26667
subFBgen	66304
tailres	1130183
tailresback	2260358
trim_list	123451
triv_gen	464660
try_elt	1624
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16