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 30831-19b50a36d0) Lines: 2218 2538 87.4 % Date: 2026-04-22 09:25:48 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62624
Buchall_deg1	1204
Buchall_param	65264
FB_aut_perm	66311
FBgen	66311
Fincke_Pohst_bound	267556
Fincke_Pohst_ideal	267554
Fincke_Pohst_ideal_both	267554
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496713
GRHok	2303946
RgC_expbitprec	1237091
RgM_expbitprec	48845
RgV_is1	105
SPLIT	1408957
SPLIT_i	1252982
SUnits_archclean	77
Ur_ZC_mul	1392546
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392547
ZV_mul	7332
_nfnewprec	57793
act_arch	2057473
add	2250551
addRe_modIm	6907268
add_cyclotomic_units	64135
add_principal_part	32327
add_rel	2502700
add_rel_i	2987671
add_to_fact	2933560
already_known	2983489
assign_subFB	67041
automorphism_matrices	64118
automorphism_perms	64055
bad_check	96212
bad_subFB	308253
ballvol	66309
be_honest	7
bnf_build_cheapfu	285486
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785113
bnf_get_C	2819983
bnf_get_GD	276789
bnf_get_Ur	1392546
bnf_get_W	1397524
bnf_get_ga	271833
bnf_get_vbase	1392631
bnf_has_fu	285773
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841333
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65261
cache_prime_dec	921959
can_factor	18794638
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64055
clean_cols	93295
cleanarch	3071773
cleanarchunit	133979
compute_R	96276
compute_invres	64056
compute_multiple_of_R	121803
compute_multiple_of_R_pivot	577886
dbg_newrel	0
delete_FB	66312
delete_cache	64135
diagact_arch	64153
divide_p	5686842
divide_p_elt	2466
divide_p_id	185468
divide_p_quo	5498913
dump_gen	1228037
err_units	0
expand	0
expandext	32348
expbitprec	2840427
extract_full_lattice	64063
fact_ok	1228538
fact_update	2124724
factorgen	17381956
fixarch	1306996
free_GRHcheck	186236
genback	28784
get_archclean	40
get_clg2	64153
get_embs	122501
get_fs	7514420
get_log_embed	726225
get_norm_fact	1231478
get_norm_fact_primes	69
get_pr_lists	1392611
get_random_ideal	56521
get_regulator	48942
get_y	69
getfu	64055
i2print	0
idealHNF_mulred	3526
idealmulpowprime2	4761
init_GRHcheck	186231
init_famat	65861
init_red_mod_units	1107812
init_rel	64135
inv_fact	0
isprincipal	174779
isprincipalall	1409084
isprincipalarch	1237090
isprincipalfact	32348
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62538
matbotidembs	55403
matenlarge	55403
modIm	204721
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64135
nfsign_from_logarch	162324
nfsign_fu	241155
nfsign_tu	239989
nfsign_units	35
not_given	396
nthideal	64055
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123394
prec_arch	1410879
primeneeded	64055
reallocate	64135
recover_partFB	1392611
red_mod_units	1107812
rel_embed	1017785
rnd_rel	56521
rnd_rel_par	0
rnd_rel_seq	56521
set_fact	2329517
set_rel_alpha	949278
signunits	7
small_norm	66795
small_norm_par	0
small_norm_prec	64049
small_norm_seq	66795
split_ideal	1392548
step	29167952
store	9537695
subFB_change	26618
subFBgen	66310
tailres	1130070
tailresback	2260118
trim_list	123394
triv_gen	464660
try_elt	1760
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16