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 30634-7c77b4d1a9) Lines: 2218 2538 87.4 % Date: 2026-01-26 09:23:16 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	1824
divide_p_elt	2559
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3521
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26658
bnf_build_cycgen	26726
genback	28784
add_principal_part	31963
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48892
bnf_build_units	50745
matbotidembs	55508
matenlarge	55508
get_random_ideal	56603
rnd_rel	56603
rnd_rel_seq	56603
_nfnewprec	57729
matbotid	62494
Buchall	62579
small_norm_prec	63996
automorphism_perms	64007
compute_invres	64007
getfu	64007
class_group_gen	64008
nthideal	64008
primeneeded	64008
extract_full_lattice	64014
automorphism_matrices	64067
add_cyclotomic_units	64090
delete_cache	64090
init_rel	64090
nfcyclotomicunits	64090
reallocate	64090
diagact_arch	64104
get_clg2	64104
buchall_end	65212
Buchall_param	65220
init_famat	65811
FBgen	66264
ballvol	66265
subFBgen	66265
FB_aut_perm	66266
delete_FB	66267
small_norm	66770
small_norm_seq	66770
assign_subFB	67037
clean_cols	93281
bad_check	96334
compute_R	96395
compute_multiple_of_R	121907
get_embs	122562
pre_allocate	123456
trim_list	123456
cleanarchunit	133880
init_GRHcheck	134440
free_GRHcheck	134441
nfsign_from_logarch	162327
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204629
nfsign_tu	239977
nfsign_fu	241154
Fincke_Pohst_ideal	267640
Fincke_Pohst_ideal_both	267640
Fincke_Pohst_bound	267643
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285480
bnf_has_fu	285767
bad_subFB	308312
triv_gen	464660
GRHchk	496430
compute_multiple_of_R_pivot	579859
get_log_embed	726101
cache_prime_dec	921307
set_rel_alpha	948830
rel_embed	1017530
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129375
dump_gen	1228036
fact_ok	1228535
get_norm_fact	1231478
isprincipalarch	1237089
RgC_expbitprec	1237094
SPLIT_i	1252979
fixarch	1306945
Ur_ZC_mul	1392547
bnf_get_Ur	1392547
split_ideal	1392547
ZV_divrem	1392549
recover_partFB	1392611
get_pr_lists	1392612
bnf_get_vbase	1392630
bnf_get_W	1397523
isprincipalall	1408721
SPLIT	1408954
prec_arch	1410514
GRHok	1530927
bnfisprincipal0	1841331
act_arch	2057331
fact_update	2124356
add	2250552
tailresback	2258742
set_fact	2329695
add_rel	2502756
bnf_get_B	2785114
bnf_get_C	2819255
expbitprec	2840346
add_to_fact	2933914
already_known	2983531
add_rel_i	2987672
cleanarch	3071508
divide_p_quo	5498914
divide_p	5686949
addRe_modIm	6906943
get_fs	7513625
store	9538374
factorgen	17381953
can_factor	18794734
step	29164283

Generated by: LCOV version 1.16