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 30831-19b50a36d0) Lines: 2218 2538 87.4 % Date: 2026-04-21 09:26:02 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62622
Buchall_deg1	1204
Buchall_param	65260
FB_aut_perm	66308
FBgen	66307
Fincke_Pohst_bound	267630
Fincke_Pohst_ideal	267636
Fincke_Pohst_ideal_both	267636
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496729
GRHok	2303939
RgC_expbitprec	1237091
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408954
SPLIT_i	1252978
SUnits_archclean	77
Ur_ZC_mul	1392548
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392550
ZV_mul	7332
_nfnewprec	57788
act_arch	2057465
add	2250539
addRe_modIm	6907260
add_cyclotomic_units	64131
add_principal_part	32327
add_rel	2502703
add_rel_i	2987639
add_to_fact	2933625
already_known	2983468
assign_subFB	67045
automorphism_matrices	64120
automorphism_perms	64056
bad_check	96283
bad_subFB	308344
ballvol	66307
be_honest	7
bnf_build_cheapfu	285476
bnf_build_cycgen	26724
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785114
bnf_get_C	2819982
bnf_get_GD	276789
bnf_get_Ur	1392548
bnf_get_W	1397523
bnf_get_ga	271833
bnf_get_vbase	1392630
bnf_has_fu	285763
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841333
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65261
cache_prime_dec	922003
can_factor	18795705
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64056
clean_cols	93305
cleanarch	3071776
cleanarchunit	133978
compute_R	96344
compute_invres	64056
compute_multiple_of_R	121882
compute_multiple_of_R_pivot	577272
dbg_newrel	0
delete_FB	66308
delete_cache	64131
diagact_arch	64154
divide_p	5686813
divide_p_elt	2376
divide_p_id	185467
divide_p_quo	5498972
dump_gen	1228037
err_units	0
expand	0
expandext	32348
expbitprec	2840441
extract_full_lattice	64060
fact_ok	1228537
fact_update	2124806
factorgen	17383045
fixarch	1306994
free_GRHcheck	186235
genback	28784
get_archclean	40
get_clg2	64154
get_embs	122582
get_fs	7514353
get_log_embed	726244
get_norm_fact	1231480
get_norm_fact_primes	69
get_pr_lists	1392611
get_random_ideal	56609
get_regulator	48943
get_y	69
getfu	64057
i2print	0
idealHNF_mulred	3523
idealmulpowprime2	4761
init_GRHcheck	186231
init_famat	65861
init_red_mod_units	1107813
init_rel	64131
inv_fact	0
isprincipal	174779
isprincipalall	1409084
isprincipalarch	1237091
isprincipalfact	32348
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62535
matbotidembs	55488
matenlarge	55487
modIm	204728
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64131
nfsign_from_logarch	162322
nfsign_fu	241154
nfsign_tu	239977
nfsign_units	35
not_given	396
nthideal	64057
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123476
prec_arch	1410880
primeneeded	64057
reallocate	64131
recover_partFB	1392610
red_mod_units	1107813
rel_embed	1017783
rnd_rel	56609
rnd_rel_par	0
rnd_rel_seq	56609
set_fact	2329532
set_rel_alpha	949418
signunits	7
small_norm	66793
small_norm_par	0
small_norm_prec	64042
small_norm_seq	66793
split_ideal	1392547
step	29169446
store	9537716
subFB_change	26675
subFBgen	66307
tailres	1130190
tailresback	2260382
trim_list	123476
triv_gen	464660
try_elt	1696
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16