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 30674-be81ecfdd4) Lines: 2218 2538 87.4 % Date: 2026-02-09 09:23:39 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	273
chinese_unit_worker	273
not_given	396
Buchall_deg1	1204
FlxqX_chinese_unit	1379
try_elt	1808
divide_p_elt	2542
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3524
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26646
bnf_build_cycgen	26726
genback	28784
add_principal_part	31963
isprincipalfact	31983
expandext	31984
bnf_compactfu	37415
RgM_expbitprec	48796
get_regulator	48892
bnf_build_units	50745
matbotidembs	55474
matenlarge	55475
rnd_rel	56575
get_random_ideal	56576
rnd_rel_seq	56576
_nfnewprec	57727
matbotid	62493
Buchall	62566
small_norm_prec	63996
class_group_gen	64007
getfu	64007
nthideal	64007
primeneeded	64007
automorphism_perms	64008
compute_invres	64008
extract_full_lattice	64015
automorphism_matrices	64068
delete_cache	64088
add_cyclotomic_units	64089
init_rel	64089
nfcyclotomicunits	64089
reallocate	64089
diagact_arch	64105
get_clg2	64105
Buchall_param	65203
buchall_end	65212
init_famat	65812
FB_aut_perm	66266
FBgen	66266
ballvol	66266
delete_FB	66266
subFBgen	66266
small_norm	66764
small_norm_seq	66764
assign_subFB	67037
clean_cols	93210
bad_check	96312
compute_R	96373
compute_multiple_of_R	121869
get_embs	122527
pre_allocate	123421
trim_list	123421
cleanarchunit	133882
init_GRHcheck	134436
free_GRHcheck	134441
nfsign_from_logarch	162325
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204632
nfsign_tu	239985
nfsign_fu	241163
Fincke_Pohst_bound	267604
Fincke_Pohst_ideal	267608
Fincke_Pohst_ideal_both	267608
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285484
bnf_has_fu	285771
bad_subFB	308315
triv_gen	464660
GRHchk	496408
compute_multiple_of_R_pivot	579129
get_log_embed	726052
cache_prime_dec	921309
set_rel_alpha	948758
rel_embed	1017376
red_mod_units	1107812
init_red_mod_units	1107813
tailres	1129415
dump_gen	1228032
fact_ok	1228536
get_norm_fact	1231480
RgC_expbitprec	1237095
isprincipalarch	1237095
SPLIT_i	1252979
fixarch	1306947
split_ideal	1392547
bnf_get_Ur	1392548
Ur_ZC_mul	1392549
ZV_divrem	1392549
get_pr_lists	1392610
recover_partFB	1392610
bnf_get_vbase	1392630
bnf_get_W	1397523
isprincipalall	1408721
SPLIT	1408955
prec_arch	1410511
GRHok	1530933
bnfisprincipal0	1841334
act_arch	2057346
fact_update	2124212
add	2250571
tailresback	2258834
set_fact	2329598
add_rel	2502661
bnf_get_B	2785114
bnf_get_C	2819256
expbitprec	2840345
add_to_fact	2933798
already_known	2983325
add_rel_i	2987456
cleanarch	3071520
divide_p_quo	5498846
divide_p	5686866
addRe_modIm	6906940
get_fs	7513682
store	9538235
factorgen	17382140
can_factor	18794869
step	29163177

Generated by: LCOV version 1.16