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 30615-cf6389b5bf) Lines: 2218 2538 87.4 % Date: 2026-01-16 09:21:08 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	1808
divide_p_elt	2543
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3525
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26652
bnf_build_cycgen	26725
genback	28784
add_principal_part	31961
expandext	31984
isprincipalfact	31984
bnf_compactfu	37414
RgM_expbitprec	48797
get_regulator	48894
bnf_build_units	50745
matbotidembs	55488
matenlarge	55489
get_random_ideal	56586
rnd_rel	56586
rnd_rel_seq	56586
_nfnewprec	57727
matbotid	62493
Buchall	62579
small_norm_prec	63998
automorphism_perms	64007
primeneeded	64007
class_group_gen	64008
compute_invres	64008
getfu	64008
nthideal	64008
extract_full_lattice	64015
automorphism_matrices	64068
add_cyclotomic_units	64089
delete_cache	64089
init_rel	64089
nfcyclotomicunits	64089
reallocate	64089
diagact_arch	64104
get_clg2	64105
buchall_end	65212
Buchall_param	65215
init_famat	65812
FBgen	66265
FB_aut_perm	66266
ballvol	66266
delete_FB	66266
subFBgen	66266
small_norm	66767
small_norm_seq	66767
assign_subFB	67029
clean_cols	93242
bad_check	96311
compute_R	96373
compute_multiple_of_R	121877
get_embs	122540
pre_allocate	123435
trim_list	123435
cleanarchunit	133879
init_GRHcheck	134437
free_GRHcheck	134440
nfsign_from_logarch	162323
isprincipal	174779
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204624
nfsign_tu	239979
nfsign_fu	241162
Fincke_Pohst_bound	267619
Fincke_Pohst_ideal	267619
Fincke_Pohst_ideal_both	267619
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285476
bnf_has_fu	285763
bad_subFB	308306
triv_gen	464660
GRHchk	496417
compute_multiple_of_R_pivot	579610
get_log_embed	726075
cache_prime_dec	921282
set_rel_alpha	948814
rel_embed	1017465
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129397
dump_gen	1228037
fact_ok	1228541
get_norm_fact	1231482
isprincipalarch	1237092
RgC_expbitprec	1237093
SPLIT_i	1252979
fixarch	1306946
split_ideal	1392547
Ur_ZC_mul	1392551
ZV_divrem	1392551
bnf_get_Ur	1392551
get_pr_lists	1392611
recover_partFB	1392611
bnf_get_vbase	1392630
bnf_get_W	1397523
isprincipalall	1408721
SPLIT	1408955
prec_arch	1410516
GRHok	1530873
bnfisprincipal0	1841333
act_arch	2057339
fact_update	2124099
add	2250571
tailresback	2258783
set_fact	2329593
add_rel	2502626
bnf_get_B	2785113
bnf_get_C	2819256
expbitprec	2840343
add_to_fact	2933791
already_known	2983332
add_rel_i	2987469
cleanarch	3071523
divide_p_quo	5498885
divide_p	5686903
addRe_modIm	6906925
get_fs	7512423
store	9538168
factorgen	17382363
can_factor	18795129
step	29163136

Generated by: LCOV version 1.16