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 30586-ccf601f509) Lines: 2215 2530 87.5 % Date: 2025-12-25 09:21:36 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	1686
divide_p_elt	2391
bnfinit0	2632
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	26435
bnf_build_cycgen	26726
genback	28783
add_principal_part	31961
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48790
get_regulator	48886
bnf_build_units	50738
matbotidembs	55543
matenlarge	55544
get_random_ideal	55642
rnd_rel	55642
rnd_rel_seq	55642
_nfnewprec	57720
matbotid	62487
Buchall	62581
small_norm_prec	63997
compute_invres	63999
automorphism_perms	64001
class_group_gen	64001
getfu	64001
nthideal	64001
primeneeded	64001
extract_full_lattice	64008
automorphism_matrices	64062
add_cyclotomic_units	64076
delete_cache	64076
init_rel	64076
nfcyclotomicunits	64076
reallocate	64076
diagact_arch	64097
get_clg2	64097
buchall_end	65205
Buchall_param	65212
init_famat	65804
FBgen	66251
ballvol	66252
FB_aut_perm	66253
delete_FB	66253
subFBgen	66253
small_norm	66770
small_norm_seq	66770
assign_subFB	67010
clean_cols	93056
bad_check	96216
compute_R	96277
compute_multiple_of_R	121750
get_embs	122448
trim_list	122488
pre_allocate	122489
cleanarchunit	133866
free_GRHcheck	134434
init_GRHcheck	134434
nfsign_from_logarch	162320
isprincipal	174779
divide_p_id	185476
nf_cxlog_normalize	197126
modIm	204615
nfsign_tu	239983
nfsign_fu	241132
Fincke_Pohst_bound	266606
Fincke_Pohst_ideal	266607
Fincke_Pohst_ideal_both	266607
bnf_get_ga	271825
bnf_get_GD	276782
bnf_build_cheapfu	285483
bnf_has_fu	285768
bad_subFB	307626
triv_gen	464660
GRHchk	496389
compute_multiple_of_R_pivot	577498
get_log_embed	726146
cache_prime_dec	921209
set_rel_alpha	948818
rel_embed	1017273
init_red_mod_units	1107812
red_mod_units	1107812
tailres	1129349
dump_gen	1228025
fact_ok	1228541
get_norm_fact	1231468
RgC_expbitprec	1237085
isprincipalarch	1237085
SPLIT_i	1252847
fixarch	1306929
ZV_divrem	1392544
split_ideal	1392545
Ur_ZC_mul	1392548
bnf_get_Ur	1392548
get_pr_lists	1392610
recover_partFB	1392610
bnf_get_vbase	1392628
bnf_get_W	1397522
isprincipalall	1408720
SPLIT	1408952
prec_arch	1410516
GRHok	1530878
bnfisprincipal0	1841334
fact_update	2052200
act_arch	2057280
add	2250490
tailresback	2258690
set_fact	2315496
add_rel	2488525
bnf_get_B	2785107
bnf_get_C	2819253
expbitprec	2840322
add_to_fact	2919839
already_known	2968997
add_rel_i	2973140
cleanarch	3071486
divide_p_quo	5436181
divide_p	5624045
addRe_modIm	6906879
get_fs	7512664
store	9462120
factorgen	16942576
can_factor	18355151
step	28414666

Generated by: LCOV version 1.16