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 30862-ea47bd413c) Lines: 2218 2538 87.4 % Date: 2026-05-05 09:26:54 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62618
Buchall_deg1	1204
Buchall_param	65267
FB_aut_perm	66314
FBgen	66314
Fincke_Pohst_bound	267583
Fincke_Pohst_ideal	267579
Fincke_Pohst_ideal_both	267578
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496771
GRHok	2304053
RgC_expbitprec	1238639
RgM_expbitprec	48853
RgV_is1	105
SPLIT	1410503
SPLIT_i	1254114
SUnits_archclean	77
Ur_ZC_mul	1394098
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1394098
ZV_mul	7332
_nfnewprec	57798
act_arch	2059037
add	2252513
addRe_modIm	6917598
add_cyclotomic_units	64137
add_principal_part	32325
add_rel	2502556
add_rel_i	2987522
add_to_fact	2933483
already_known	2983335
assign_subFB	67048
automorphism_matrices	64126
automorphism_perms	64063
bad_check	96226
bad_subFB	308306
ballvol	66313
be_honest	7
bnf_build_cheapfu	285483
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37421
bnf_compactfu_mat	70
bnf_get_B	2788205
bnf_get_C	2823077
bnf_get_GD	276790
bnf_get_Ur	1394098
bnf_get_W	1399068
bnf_get_ga	271833
bnf_get_vbase	1394175
bnf_has_fu	285771
bnfinit0	2646
bnfinit_FP_worker	0
bnfisprincipal0	1843137
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65267
cache_prime_dec	922086
can_factor	18797723
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64064
clean_cols	93282
cleanarch	3076963
cleanarchunit	133989
compute_R	96288
compute_invres	64064
compute_multiple_of_R	121820
compute_multiple_of_R_pivot	578259
dbg_newrel	0
delete_FB	66313
delete_cache	64137
diagact_arch	64161
divide_p	5686936
divide_p_elt	2348
divide_p_id	185882
divide_p_quo	5498709
dump_gen	1229583
err_units	0
expand	0
expandext	32347
expbitprec	2843550
extract_full_lattice	64071
fact_ok	1230081
fact_update	2124734
factorgen	17383510
fixarch	1308551
free_GRHcheck	186241
genback	28784
get_archclean	40
get_clg2	64161
get_embs	122514
get_fs	7516277
get_log_embed	726203
get_norm_fact	1233029
get_norm_fact_primes	69
get_pr_lists	1394157
get_random_ideal	56557
get_regulator	48950
get_y	69
getfu	64064
i2print	0
idealHNF_mulred	3524
idealmulpowprime2	4761
init_GRHcheck	186238
init_famat	65868
init_red_mod_units	1109360
init_rel	64137
inv_fact	0
isprincipal	174779
isprincipalall	1410632
isprincipalarch	1238639
isprincipalfact	32347
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62541
matbotidembs	55414
matenlarge	55414
modIm	204742
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	199199
nfcyclotomicunits	64137
nfsign_from_logarch	162320
nfsign_fu	241158
nfsign_tu	239984
nfsign_units	35
not_given	396
nthideal	64063
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123408
prec_arch	1412427
primeneeded	64063
reallocate	64137
recover_partFB	1394157
red_mod_units	1109360
rel_embed	1017797
rnd_rel	56557
rnd_rel_par	0
rnd_rel_seq	56557
set_fact	2329380
set_rel_alpha	949462
signunits	7
small_norm	66778
small_norm_par	0
small_norm_prec	64058
small_norm_seq	66778
split_ideal	1394092
step	29168283
store	9537704
subFB_change	26654
subFBgen	66313
tailres	1130241
tailresback	2260462
trim_list	123408
triv_gen	464919
try_elt	1673
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16