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 30585-4c42182400) Lines: 2215 2530 87.5 % Date: 2025-12-23 09:21:19 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	1631
divide_p_elt	2319
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3538
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24914
subFB_change	26438
bnf_build_cycgen	26726
genback	28784
add_principal_part	32173
expandext	32194
isprincipalfact	32194
bnf_compactfu	37415
RgM_expbitprec	48789
get_regulator	48886
bnf_build_units	50737
matbotidembs	55509
matenlarge	55509
get_random_ideal	55624
rnd_rel	55624
rnd_rel_seq	55624
_nfnewprec	57728
matbotid	62491
Buchall	62579
small_norm_prec	64003
class_group_gen	64007
primeneeded	64007
automorphism_perms	64008
compute_invres	64008
getfu	64008
nthideal	64008
extract_full_lattice	64012
automorphism_matrices	64069
add_cyclotomic_units	64080
delete_cache	64080
init_rel	64080
nfcyclotomicunits	64080
reallocate	64080
diagact_arch	64105
get_clg2	64105
buchall_end	65211
Buchall_param	65219
init_famat	65812
ballvol	66255
FBgen	66256
delete_FB	66256
subFBgen	66256
FB_aut_perm	66257
small_norm	66762
small_norm_seq	66762
assign_subFB	67026
clean_cols	93023
bad_check	96227
compute_R	96287
compute_multiple_of_R	121736
get_embs	122418
pre_allocate	122458
trim_list	122458
cleanarchunit	133872
init_GRHcheck	134427
free_GRHcheck	134428
nfsign_from_logarch	162326
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204616
nfsign_tu	239988
nfsign_fu	241157
Fincke_Pohst_bound	266575
Fincke_Pohst_ideal	266583
Fincke_Pohst_ideal_both	266583
bnf_get_ga	271827
bnf_get_GD	276783
bnf_build_cheapfu	285474
bnf_has_fu	285762
bad_subFB	307600
triv_gen	464659
GRHchk	496429
compute_multiple_of_R_pivot	576147
get_log_embed	726082
cache_prime_dec	921278
set_rel_alpha	948665
rel_embed	1017078
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129436
dump_gen	1228032
fact_ok	1228544
get_norm_fact	1231471
RgC_expbitprec	1237085
isprincipalarch	1237087
SPLIT_i	1252847
fixarch	1306937
split_ideal	1392547
ZV_divrem	1392549
Ur_ZC_mul	1392551
bnf_get_Ur	1392551
get_pr_lists	1392610
recover_partFB	1392610
bnf_get_vbase	1392630
bnf_get_W	1397523
isprincipalall	1408930
SPLIT	1408958
prec_arch	1410726
GRHok	1530848
bnfisprincipal0	1841332
fact_update	2052221
act_arch	2057301
add	2250510
tailresback	2258865
set_fact	2315387
add_rel	2488430
bnf_get_B	2785113
bnf_get_C	2819675
expbitprec	2840319
add_to_fact	2919770
already_known	2968775
add_rel_i	2972914
cleanarch	3071504
divide_p_quo	5436082
divide_p	5623860
addRe_modIm	6906878
get_fs	7512799
store	9461762
factorgen	16943162
can_factor	18355708
step	28417353

Generated by: LCOV version 1.16