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 30657-d14c2a9e4e) Lines: 2218 2538 87.4 % Date: 2026-01-30 09:23:18 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62559
Buchall_deg1	1204
Buchall_param	65202
FB_aut_perm	66268
FBgen	66267
Fincke_Pohst_bound	267669
Fincke_Pohst_ideal	267668
Fincke_Pohst_ideal_both	267668
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496433
GRHok	1530882
RgC_expbitprec	1237093
RgM_expbitprec	48797
RgV_is1	105
SPLIT	1408956
SPLIT_i	1252981
SUnits_archclean	77
Ur_ZC_mul	1392550
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392550
ZV_mul	7332
_nfnewprec	57727
act_arch	2057331
add	2250551
addRe_modIm	6906959
add_cyclotomic_units	64091
add_principal_part	31963
add_rel	2502756
add_rel_i	2987660
add_to_fact	2933885
already_known	2983514
assign_subFB	67031
automorphism_matrices	64069
automorphism_perms	64008
bad_check	96331
bad_subFB	308361
ballvol	66268
be_honest	7
bnf_build_cheapfu	285485
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785118
bnf_get_C	2819256
bnf_get_GD	276790
bnf_get_Ur	1392537
bnf_get_W	1397525
bnf_get_ga	271834
bnf_get_vbase	1392632
bnf_has_fu	285772
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841333
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65212
cache_prime_dec	921322
can_factor	18794679
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64008
clean_cols	93306
cleanarch	3071532
cleanarchunit	133880
compute_R	96394
compute_invres	64008
compute_multiple_of_R	121927
compute_multiple_of_R_pivot	579653
dbg_newrel	0
delete_FB	66267
delete_cache	64091
diagact_arch	64105
divide_p	5686947
divide_p_elt	2578
divide_p_id	185479
divide_p_quo	5498892
dump_gen	1228032
err_units	0
expand	0
expandext	31984
expbitprec	2840342
extract_full_lattice	64015
fact_ok	1228540
fact_update	2124066
factorgen	17381932
fixarch	1306948
free_GRHcheck	134440
genback	28784
get_archclean	40
get_clg2	64105
get_embs	122592
get_fs	7513783
get_log_embed	726152
get_norm_fact	1231483
get_norm_fact_primes	69
get_pr_lists	1392612
get_random_ideal	56629
get_regulator	48894
get_y	69
getfu	64008
i2print	0
idealHNF_mulred	3521
idealmulpowprime2	4761
init_GRHcheck	134438
init_famat	65812
init_red_mod_units	1107811
init_rel	64090
inv_fact	0
isprincipal	174779
isprincipalall	1408721
isprincipalarch	1237094
isprincipalfact	31984
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62495
matbotidembs	55537
matenlarge	55538
modIm	204636
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64091
nfsign_from_logarch	162325
nfsign_fu	241170
nfsign_tu	239986
nfsign_units	35
not_given	396
nthideal	64008
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123484
prec_arch	1410516
primeneeded	64008
reallocate	64090
recover_partFB	1392612
red_mod_units	1107813
rel_embed	1017559
rnd_rel	56629
rnd_rel_par	0
rnd_rel_seq	56629
set_fact	2329709
set_rel_alpha	948838
signunits	7
small_norm	66774
small_norm_par	0
small_norm_prec	64004
small_norm_seq	66774
split_ideal	1392549
step	29163301
store	9538435
subFB_change	26667
subFBgen	66268
tailres	1129446
tailresback	2258889
trim_list	123484
triv_gen	464660
try_elt	1841
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16