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 30590-f14e077362) Lines: 2213 2528 87.5 % Date: 2026-01-02 09:20:44 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	1649
divide_p_elt	2343
bnfinit0	2632
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3537
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24914
subFB_change	26419
bnf_build_cycgen	26726
genback	28784
add_principal_part	31963
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48790
get_regulator	48887
bnf_build_units	50738
matbotidembs	55507
matenlarge	55507
get_random_ideal	55612
rnd_rel	55612
rnd_rel_seq	55612
_nfnewprec	57721
matbotid	62485
Buchall	62578
small_norm_prec	63993
nthideal	63999
automorphism_perms	64000
primeneeded	64000
class_group_gen	64001
compute_invres	64001
getfu	64001
extract_full_lattice	64007
automorphism_matrices	64061
reallocate	64072
init_rel	64073
add_cyclotomic_units	64074
delete_cache	64074
nfcyclotomicunits	64074
diagact_arch	64096
get_clg2	64096
buchall_end	65205
Buchall_param	65213
init_famat	65805
ballvol	66247
subFBgen	66247
FB_aut_perm	66250
FBgen	66250
delete_FB	66251
small_norm	66762
small_norm_seq	66762
assign_subFB	67007
clean_cols	93032
bad_check	96198
compute_R	96260
compute_multiple_of_R	121719
get_embs	122410
pre_allocate	122448
trim_list	122448
cleanarchunit	133868
free_GRHcheck	134434
init_GRHcheck	134434
nfsign_from_logarch	162325
isprincipal	174779
divide_p_id	185478
nf_cxlog_normalize	197126
modIm	204620
nfsign_tu	239979
nfsign_fu	241155
Fincke_Pohst_bound	266571
Fincke_Pohst_ideal	266572
Fincke_Pohst_ideal_both	266572
bnf_get_ga	271827
bnf_get_GD	276783
bnf_build_cheapfu	285482
bnf_has_fu	285769
bad_subFB	307568
triv_gen	464660
GRHchk	496385
compute_multiple_of_R_pivot	575962
get_log_embed	726091
cache_prime_dec	921200
set_rel_alpha	948646
rel_embed	1017064
red_mod_units	1107810
init_red_mod_units	1107813
tailres	1129233
dump_gen	1228033
fact_ok	1228546
get_norm_fact	1231475
isprincipalarch	1237084
RgC_expbitprec	1237088
SPLIT_i	1252848
fixarch	1306928
Ur_ZC_mul	1392549
bnf_get_Ur	1392549
split_ideal	1392549
ZV_divrem	1392550
get_pr_lists	1392614
recover_partFB	1392614
bnf_get_vbase	1392632
bnf_get_W	1397525
isprincipalall	1408721
SPLIT	1408956
prec_arch	1410518
GRHok	1530860
bnfisprincipal0	1841332
fact_update	2052113
act_arch	2057279
add	2250484
tailresback	2258439
set_fact	2315386
add_rel	2488410
bnf_get_B	2785115
bnf_get_C	2819258
expbitprec	2840326
add_to_fact	2919764
already_known	2968710
add_rel_i	2972852
cleanarch	3071479
divide_p_quo	5436028
divide_p	5623840
addRe_modIm	6906846
get_fs	7511614
store	9461780
factorgen	16942547
can_factor	18355117
step	28415394

Generated by: LCOV version 1.16