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 30824-18397de1d0) Lines: 2218 2538 87.4 % Date: 2026-04-19 09:25:48 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62624
Buchall_deg1	1204
Buchall_param	65263
FB_aut_perm	66308
FBgen	66307
Fincke_Pohst_bound	267536
Fincke_Pohst_ideal	267535
Fincke_Pohst_ideal_both	267535
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496719
GRHok	2303949
RgC_expbitprec	1237094
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408955
SPLIT_i	1252979
SUnits_archclean	77
Ur_ZC_mul	1392541
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392543
ZV_mul	7332
_nfnewprec	57793
act_arch	2057470
add	2250560
addRe_modIm	6907251
add_cyclotomic_units	64130
add_principal_part	32326
add_rel	2502577
add_rel_i	2987506
add_to_fact	2933496
already_known	2983327
assign_subFB	67041
automorphism_matrices	64119
automorphism_perms	64056
bad_check	96187
bad_subFB	308226
ballvol	66307
be_honest	7
bnf_build_cheapfu	285472
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50744
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785107
bnf_get_C	2819982
bnf_get_GD	276790
bnf_get_Ur	1392541
bnf_get_W	1397524
bnf_get_ga	271834
bnf_get_vbase	1392631
bnf_has_fu	285758
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841332
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65260
cache_prime_dec	921972
can_factor	18795084
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64057
clean_cols	93283
cleanarch	3071776
cleanarchunit	133977
compute_R	96253
compute_invres	64057
compute_multiple_of_R	121783
compute_multiple_of_R_pivot	578236
dbg_newrel	0
delete_FB	66307
delete_cache	64131
diagact_arch	64154
divide_p	5686618
divide_p_elt	2372
divide_p_id	185468
divide_p_quo	5498786
dump_gen	1228037
err_units	0
expand	0
expandext	32348
expbitprec	2840443
extract_full_lattice	64063
fact_ok	1228537
fact_update	2124647
factorgen	17382436
fixarch	1306990
free_GRHcheck	186233
genback	28783
get_archclean	40
get_clg2	64154
get_embs	122480
get_fs	7515220
get_log_embed	726151
get_norm_fact	1231477
get_norm_fact_primes	69
get_pr_lists	1392612
get_random_ideal	56513
get_regulator	48942
get_y	69
getfu	64055
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	186230
init_famat	65860
init_red_mod_units	1107811
init_rel	64129
inv_fact	0
isprincipal	174779
isprincipalall	1409084
isprincipalarch	1237096
isprincipalfact	32348
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24921
matbotid	62535
matbotidembs	55386
matenlarge	55386
modIm	204729
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64130
nfsign_from_logarch	162322
nfsign_fu	241148
nfsign_tu	239975
nfsign_units	35
not_given	396
nthideal	64056
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123372
prec_arch	1410878
primeneeded	64056
reallocate	64129
recover_partFB	1392612
red_mod_units	1107813
rel_embed	1017703
rnd_rel	56512
rnd_rel_par	0
rnd_rel_seq	56513
set_fact	2329417
set_rel_alpha	949358
signunits	7
small_norm	66786
small_norm_par	0
small_norm_prec	64052
small_norm_seq	66786
split_ideal	1392548
step	29169134
store	9537366
subFB_change	26629
subFBgen	66307
tailres	1130142
tailresback	2260266
trim_list	123372
triv_gen	464660
try_elt	1694
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16