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 30625-1bbc371a2f) Lines: 2218 2538 87.4 % Date: 2026-01-23 09:24:12 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	1756
divide_p_elt	2477
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3525
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26671
bnf_build_cycgen	26726
genback	28784
add_principal_part	31963
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48894
bnf_build_units	50745
matbotidembs	55515
matenlarge	55515
get_random_ideal	56620
rnd_rel	56621
rnd_rel_seq	56621
_nfnewprec	57726
matbotid	62490
Buchall	62568
small_norm_prec	64002
getfu	64007
automorphism_perms	64008
class_group_gen	64008
compute_invres	64008
nthideal	64008
primeneeded	64008
extract_full_lattice	64012
automorphism_matrices	64070
add_cyclotomic_units	64086
delete_cache	64086
init_rel	64086
nfcyclotomicunits	64086
reallocate	64086
diagact_arch	64105
get_clg2	64105
Buchall_param	65204
buchall_end	65211
init_famat	65812
FBgen	66261
ballvol	66262
delete_FB	66262
FB_aut_perm	66263
subFBgen	66263
small_norm	66758
small_norm_seq	66758
assign_subFB	67033
clean_cols	93253
bad_check	96341
compute_R	96406
compute_multiple_of_R	121904
get_embs	122563
pre_allocate	123458
trim_list	123458
cleanarchunit	133882
init_GRHcheck	134434
free_GRHcheck	134435
nfsign_from_logarch	162324
isprincipal	174779
divide_p_id	185477
nf_cxlog_normalize	197126
modIm	204632
nfsign_tu	239987
nfsign_fu	241165
Fincke_Pohst_ideal	267641
Fincke_Pohst_ideal_both	267641
Fincke_Pohst_bound	267643
bnf_get_ga	271833
bnf_get_GD	276788
bnf_build_cheapfu	285483
bnf_has_fu	285770
bad_subFB	308343
triv_gen	464660
GRHchk	496434
compute_multiple_of_R_pivot	579590
get_log_embed	726050
cache_prime_dec	921327
set_rel_alpha	948844
rel_embed	1017414
init_red_mod_units	1107812
red_mod_units	1107812
tailres	1129446
dump_gen	1228038
fact_ok	1228539
get_norm_fact	1231482
RgC_expbitprec	1237094
isprincipalarch	1237094
SPLIT_i	1252982
fixarch	1306947
split_ideal	1392548
Ur_ZC_mul	1392550
ZV_divrem	1392550
bnf_get_Ur	1392550
get_pr_lists	1392611
recover_partFB	1392611
bnf_get_vbase	1392631
bnf_get_W	1397524
isprincipalall	1408721
SPLIT	1408958
prec_arch	1410517
GRHok	1530857
bnfisprincipal0	1841334
act_arch	2057346
fact_update	2124183
add	2250574
tailresback	2258891
set_fact	2329530
add_rel	2502584
bnf_get_B	2785117
bnf_get_C	2819256
expbitprec	2840346
add_to_fact	2933765
already_known	2983278
add_rel_i	2987424
cleanarch	3071513
divide_p_quo	5498824
divide_p	5686773
addRe_modIm	6906919
get_fs	7514057
store	9538032
factorgen	17382499
can_factor	18795171
step	29163683

Generated by: LCOV version 1.16