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 30702-bddb8d6928) Lines: 2195 2538 86.5 % Date: 2026-02-23 02:23:56 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	53522
Buchall_deg1	1017
Buchall_param	55702
FB_aut_perm	56590
FBgen	56590
Fincke_Pohst_bound	227915
Fincke_Pohst_ideal	227915
Fincke_Pohst_ideal_both	227915
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1097
GRHchk	423748
GRHok	1164549
RgC_expbitprec	1038851
RgM_expbitprec	41668
RgV_is1	90
SPLIT	1185423
SPLIT_i	1052559
SUnits_archclean	56
Ur_ZC_mul	1172043
Vbase_to_FB	2936
ZM_remove_unused	134
ZV_divrem	1172043
ZV_mul	5787
_nfnewprec	49354
act_arch	1707240
add	1858495
addRe_modIm	5788180
add_cyclotomic_units	54744
add_principal_part	26843
add_rel	2106297
add_rel_i	2516868
add_to_fact	2470747
already_known	2513338
assign_subFB	57245
automorphism_matrices	54723
automorphism_perms	54674
bad_check	82301
bad_subFB	263306
ballvol	56590
be_honest	6
bnf_build_cheapfu	244210
bnf_build_cycgen	22511
bnf_build_matalpha	17
bnf_build_units	43413
bnf_compactfu	32033
bnf_compactfu_mat	60
bnf_get_B	2344103
bnf_get_C	2372588
bnf_get_GD	220328
bnf_get_Ur	1172043
bnf_get_W	1176214
bnf_get_ga	216174
bnf_get_vbase	1172109
bnf_has_fu	244456
bnfinit0	2180
bnfinit_FP_worker	0
bnfisprincipal0	1556180
bnfnewprec	6
bnfnewprec_shallow	73
bnftestprimes	49
bnrnewprec	6
bnrnewprec_shallow	0
buchall_end	55691
cache_prime_dec	786461
can_factor	15762956
chinese_unit	74
chinese_unit_slice	218
chinese_unit_worker	218
class_group_gen	54674
clean_cols	79491
cleanarch	2585862
cleanarchunit	114284
compute_R	82355
compute_invres	54674
compute_multiple_of_R	104052
compute_multiple_of_R_pivot	487490
dbg_newrel	0
delete_FB	56590
delete_cache	54744
diagact_arch	54747
divide_p	4771564
divide_p_elt	2131
divide_p_id	157893
divide_p_quo	4611540
dump_gen	1031203
err_units	0
expand	0
expandext	26861
expbitprec	2373824
extract_full_lattice	54680
fact_ok	1032044
fact_update	1790025
factorgen	14574250
fixarch	1098449
free_GRHcheck	105262
genback	24526
get_archclean	34
get_clg2	54747
get_embs	104612
get_fs	6411883
get_log_embed	619106
get_norm_fact	1034115
get_norm_fact_primes	58
get_pr_lists	1172092
get_random_ideal	48350
get_regulator	41741
get_y	58
getfu	54674
i2print	0
idealHNF_mulred	2982
idealmulpowprime2	4080
init_GRHcheck	105262
init_famat	56220
init_red_mod_units	928057
init_rel	54744
inv_fact	0
isprincipal	149510
isprincipalall	1185540
isprincipalarch	1038851
isprincipalfact	26861
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	74
log2fubound	74
makecycgen	4154
makematal	17
makeunits	21320
matbotid	53430
matbotidembs	47414
matenlarge	47414
modIm	174384
myprecdbl	63
needed_bitprec	3266
nf_cxlog_normalize	168985
nfcyclotomicunits	54744
nfsign_from_logarch	138494
nfsign_fu	206252
nfsign_tu	205247
nfsign_units	30
not_given	333
nthideal	54674
pack_FB	0
pr_index	2936
pr_orbit_fill	10170
pre_allocate	105376
prec_arch	1187031
primeneeded	54674
reallocate	54744
recover_partFB	1172092
red_mod_units	928057
rel_embed	866553
rnd_rel	48350
rnd_rel_par	0
rnd_rel_seq	48350
set_fact	1958835
set_rel_alpha	808397
signunits	6
small_norm	56956
small_norm_par	0
small_norm_prec	54674
small_norm_seq	56956
split_ideal	1172043
step	24570232
store	8015250
subFB_change	22840
subFBgen	56590
tailres	964647
tailresback	1929294
trim_list	105376
triv_gen	397544
try_elt	1530
unpack_FB	0
vec_chinese_units	74
wr_rel	0

Generated by: LCOV version 1.16