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 30616-7aa4fb0184) Lines: 2218 2538 87.4 % Date: 2026-01-18 09:22:29 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	1840
divide_p_elt	2582
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	26649
bnf_build_cycgen	26726
genback	28784
add_principal_part	31962
expandext	31984
isprincipalfact	31984
bnf_compactfu	37414
RgM_expbitprec	48797
get_regulator	48894
bnf_build_units	50745
matbotidembs	55501
matenlarge	55501
get_random_ideal	56592
rnd_rel	56593
rnd_rel_seq	56593
_nfnewprec	57728
matbotid	62495
Buchall	62578
small_norm_prec	64002
class_group_gen	64007
primeneeded	64007
automorphism_perms	64008
compute_invres	64008
getfu	64008
nthideal	64008
extract_full_lattice	64014
automorphism_matrices	64071
init_rel	64090
reallocate	64090
add_cyclotomic_units	64091
delete_cache	64091
nfcyclotomicunits	64091
diagact_arch	64104
get_clg2	64104
buchall_end	65211
Buchall_param	65216
init_famat	65812
FBgen	66266
FB_aut_perm	66267
delete_FB	66267
ballvol	66268
subFBgen	66268
small_norm	66773
small_norm_seq	66773
assign_subFB	67035
clean_cols	93243
bad_check	96339
compute_R	96403
compute_multiple_of_R	121886
get_embs	122555
pre_allocate	123449
trim_list	123449
cleanarchunit	133881
init_GRHcheck	134438
free_GRHcheck	134439
nfsign_from_logarch	162322
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204633
nfsign_tu	239983
nfsign_fu	241147
Fincke_Pohst_ideal	267619
Fincke_Pohst_ideal_both	267619
Fincke_Pohst_bound	267622
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285476
bnf_has_fu	285763
bad_subFB	308330
triv_gen	464659
GRHchk	496429
compute_multiple_of_R_pivot	578609
get_log_embed	726084
cache_prime_dec	921320
set_rel_alpha	948679
rel_embed	1017391
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129441
dump_gen	1228034
fact_ok	1228536
get_norm_fact	1231480
RgC_expbitprec	1237088
isprincipalarch	1237093
SPLIT_i	1252979
fixarch	1306942
bnf_get_Ur	1392542
Ur_ZC_mul	1392543
split_ideal	1392543
ZV_divrem	1392546
get_pr_lists	1392607
recover_partFB	1392607
bnf_get_vbase	1392626
bnf_get_W	1397519
isprincipalall	1408720
SPLIT	1408956
prec_arch	1410516
GRHok	1530898
bnfisprincipal0	1841332
act_arch	2057346
fact_update	2124285
add	2250572
tailresback	2258880
set_fact	2329653
add_rel	2502702
bnf_get_B	2785108
bnf_get_C	2819256
expbitprec	2840340
add_to_fact	2933820
already_known	2983370
add_rel_i	2987509
cleanarch	3071527
divide_p_quo	5498904
divide_p	5686962
addRe_modIm	6906951
get_fs	7513034
store	9538351
factorgen	17381736
can_factor	18794562
step	29162001

Generated by: LCOV version 1.16