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 30571-c0dfe82732) Lines: 2215 2530 87.5 % Date: 2025-12-05 09:21:30 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	1721
divide_p_elt	2427
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3536
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24915
subFB_change	26417
bnf_build_cycgen	26725
genback	28811
add_principal_part	32172
expandext	32194
isprincipalfact	32194
bnf_compactfu	37429
RgM_expbitprec	48804
get_regulator	48900
bnf_build_units	50738
matbotidembs	55523
matenlarge	55523
get_random_ideal	55634
rnd_rel_seq	55634
rnd_rel	55635
_nfnewprec	57741
matbotid	62510
Buchall	62606
automorphism_perms	64034
getfu	64034
small_norm_prec	64034
class_group_gen	64036
compute_invres	64036
nthideal	64036
primeneeded	64036
extract_full_lattice	64042
automorphism_matrices	64097
add_cyclotomic_units	64113
delete_cache	64113
init_rel	64113
nfcyclotomicunits	64113
reallocate	64113
diagact_arch	64131
get_clg2	64131
buchall_end	65240
Buchall_param	65245
init_famat	65840
ballvol	66288
FBgen	66289
subFBgen	66289
FB_aut_perm	66290
delete_FB	66290
small_norm	66813
small_norm_seq	66813
assign_subFB	67056
clean_cols	93118
bad_check	96255
compute_R	96318
compute_multiple_of_R	121796
get_embs	122486
pre_allocate	122526
trim_list	122526
cleanarchunit	133913
init_GRHcheck	134700
free_GRHcheck	134701
nfsign_from_logarch	162323
isprincipal	174793
divide_p_id	185520
nf_cxlog_normalize	197126
modIm	204645
nfsign_tu	239983
nfsign_fu	241152
Fincke_Pohst_ideal	266698
Fincke_Pohst_ideal_both	266698
Fincke_Pohst_bound	266701
bnf_get_ga	271855
bnf_get_GD	276811
bnf_build_cheapfu	285492
bnf_has_fu	285779
bad_subFB	307720
triv_gen	464660
GRHchk	496657
compute_multiple_of_R_pivot	577538
get_log_embed	726462
cache_prime_dec	921652
set_rel_alpha	949060
rel_embed	1017754
init_red_mod_units	1107841
red_mod_units	1107841
tailres	1129960
dump_gen	1228059
fact_ok	1228575
get_norm_fact	1231502
RgC_expbitprec	1237115
isprincipalarch	1237116
SPLIT_i	1252843
fixarch	1306965
Ur_ZC_mul	1392590
ZV_divrem	1392590
bnf_get_Ur	1392590
split_ideal	1392591
get_pr_lists	1392654
recover_partFB	1392654
bnf_get_vbase	1392673
bnf_get_W	1397566
isprincipalall	1408973
SPLIT	1408995
prec_arch	1410783
GRHok	1533170
bnfisprincipal0	1841374
fact_update	2052490
act_arch	2057553
add	2250646
tailresback	2259907
set_fact	2316546
add_rel	2489670
bnf_get_B	2785196
bnf_get_C	2819773
expbitprec	2840408
add_to_fact	2920892
already_known	2970653
add_rel_i	2974793
cleanarch	3071839
divide_p_quo	5437839
divide_p	5625783
addRe_modIm	6907403
get_fs	7516288
store	9465798
factorgen	16944206
can_factor	18356794
step	28419174

Generated by: LCOV version 1.16