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 30595-a3cd9a95e8) Lines: 2213 2528 87.5 % Date: 2026-01-04 09:21:39 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	274
chinese_unit_worker	274
not_given	396
Buchall_deg1	1204
FlxqX_chinese_unit	1379
try_elt	1792
divide_p_elt	2523
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3538
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24915
subFB_change	26530
bnf_build_cycgen	26725
genback	28784
add_principal_part	31963
expandext	31980
isprincipalfact	31983
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48894
bnf_build_units	50738
matbotidembs	55489
matenlarge	55489
get_random_ideal	55710
rnd_rel	55711
rnd_rel_seq	55711
_nfnewprec	57720
matbotid	62485
Buchall	62570
small_norm_prec	63993
primeneeded	64007
automorphism_perms	64008
class_group_gen	64008
compute_invres	64008
getfu	64008
nthideal	64008
extract_full_lattice	64015
automorphism_matrices	64068
init_rel	64087
reallocate	64087
add_cyclotomic_units	64088
delete_cache	64088
nfcyclotomicunits	64088
diagact_arch	64104
get_clg2	64104
Buchall_param	65210
buchall_end	65212
init_famat	65812
FBgen	66261
FB_aut_perm	66264
ballvol	66265
delete_FB	66265
subFBgen	66265
small_norm	66767
small_norm_seq	66767
assign_subFB	67025
clean_cols	93138
bad_check	96309
compute_R	96365
compute_multiple_of_R	121825
get_embs	122518
pre_allocate	122556
trim_list	122556
cleanarchunit	133881
init_GRHcheck	134431
free_GRHcheck	134434
nfsign_from_logarch	162326
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204632
nfsign_tu	239974
nfsign_fu	241156
Fincke_Pohst_bound	266686
Fincke_Pohst_ideal	266686
Fincke_Pohst_ideal_both	266686
bnf_get_ga	271827
bnf_get_GD	276783
bnf_build_cheapfu	285478
bnf_has_fu	285765
bad_subFB	307715
triv_gen	464660
GRHchk	496422
compute_multiple_of_R_pivot	578790
get_log_embed	726351
cache_prime_dec	921287
set_rel_alpha	948630
rel_embed	1017603
red_mod_units	1107811
init_red_mod_units	1107813
tailres	1129374
dump_gen	1228032
fact_ok	1228547
get_norm_fact	1231473
RgC_expbitprec	1237084
isprincipalarch	1237087
SPLIT_i	1252848
fixarch	1306941
split_ideal	1392544
Ur_ZC_mul	1392546
bnf_get_Ur	1392546
ZV_divrem	1392549
get_pr_lists	1392607
recover_partFB	1392607
bnf_get_vbase	1392627
bnf_get_W	1397520
isprincipalall	1408720
SPLIT	1408956
prec_arch	1410514
GRHok	1530809
bnfisprincipal0	1841335
fact_update	2052348
act_arch	2057306
add	2250494
tailresback	2258743
set_fact	2315958
add_rel	2488958
bnf_get_B	2785108
bnf_get_C	2819255
expbitprec	2840337
add_to_fact	2920249
already_known	2969635
add_rel_i	2973782
cleanarch	3071509
divide_p_quo	5436174
divide_p	5624173
addRe_modIm	6906942
get_fs	7513393
store	9462642
factorgen	16942907
can_factor	18355549
step	28417663

Generated by: LCOV version 1.16