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 30658-0716cf3506) Lines: 2218 2538 87.4 % Date: 2026-01-31 09:22:40 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	1825
divide_p_elt	2562
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3522
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26679
bnf_build_cycgen	26726
genback	28784
add_principal_part	31963
expandext	31983
isprincipalfact	31983
bnf_compactfu	37414
RgM_expbitprec	48797
get_regulator	48893
bnf_build_units	50745
matbotidembs	55546
matenlarge	55546
get_random_ideal	56638
rnd_rel	56640
rnd_rel_seq	56640
_nfnewprec	57730
matbotid	62494
Buchall	62566
small_norm_prec	63991
getfu	64005
automorphism_perms	64006
nthideal	64007
primeneeded	64007
class_group_gen	64008
compute_invres	64008
extract_full_lattice	64015
automorphism_matrices	64067
init_rel	64089
reallocate	64089
add_cyclotomic_units	64090
delete_cache	64090
nfcyclotomicunits	64090
diagact_arch	64104
get_clg2	64104
Buchall_param	65207
buchall_end	65211
init_famat	65811
subFBgen	66261
FBgen	66265
FB_aut_perm	66266
delete_FB	66266
ballvol	66267
small_norm	66769
small_norm_seq	66769
assign_subFB	67042
clean_cols	93275
bad_check	96374
compute_R	96437
compute_multiple_of_R	121934
get_embs	122598
pre_allocate	123493
trim_list	123493
cleanarchunit	133881
init_GRHcheck	134437
free_GRHcheck	134440
nfsign_from_logarch	162326
isprincipal	174779
divide_p_id	185480
nf_cxlog_normalize	197126
modIm	204636
nfsign_tu	239991
nfsign_fu	241160
Fincke_Pohst_bound	267665
Fincke_Pohst_ideal	267668
Fincke_Pohst_ideal_both	267668
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285488
bnf_has_fu	285775
bad_subFB	308371
triv_gen	464660
GRHchk	496413
compute_multiple_of_R_pivot	580262
get_log_embed	726137
cache_prime_dec	921271
set_rel_alpha	948877
rel_embed	1017592
init_red_mod_units	1107812
red_mod_units	1107813
tailres	1129276
dump_gen	1228038
fact_ok	1228540
get_norm_fact	1231481
RgC_expbitprec	1237092
isprincipalarch	1237094
SPLIT_i	1252980
fixarch	1306949
ZV_divrem	1392549
bnf_get_Ur	1392549
Ur_ZC_mul	1392550
split_ideal	1392550
get_pr_lists	1392613
recover_partFB	1392613
bnf_get_vbase	1392633
bnf_get_W	1397526
isprincipalall	1408713
SPLIT	1408957
prec_arch	1410514
GRHok	1530870
bnfisprincipal0	1841335
act_arch	2057329
fact_update	2124159
add	2250560
tailresback	2258557
set_fact	2329692
add_rel	2502734
bnf_get_B	2785119
bnf_get_C	2819254
expbitprec	2840343
add_to_fact	2933873
already_known	2983538
add_rel_i	2987674
cleanarch	3071520
divide_p_quo	5498844
divide_p	5686882
addRe_modIm	6906956
get_fs	7511895
store	9538348
factorgen	17381938
can_factor	18794660
step	29163465

Generated by: LCOV version 1.16