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 30657-d14c2a9e4e) Lines: 2218 2538 87.4 % Date: 2026-01-29 09:23:20 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62579
Buchall_deg1	1204
Buchall_param	65214
FB_aut_perm	66266
FBgen	66265
Fincke_Pohst_bound	267658
Fincke_Pohst_ideal	267660
Fincke_Pohst_ideal_both	267660
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496432
GRHok	1530851
RgC_expbitprec	1237091
RgM_expbitprec	48797
RgV_is1	105
SPLIT	1408954
SPLIT_i	1252979
SUnits_archclean	77
Ur_ZC_mul	1392550
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392549
ZV_mul	7332
_nfnewprec	57728
act_arch	2057341
add	2250571
addRe_modIm	6906934
add_cyclotomic_units	64089
add_principal_part	31963
add_rel	2502621
add_rel_i	2987494
add_to_fact	2933771
already_known	2983352
assign_subFB	67036
automorphism_matrices	64070
automorphism_perms	64006
bad_check	96355
bad_subFB	308332
ballvol	66266
be_honest	7
bnf_build_cheapfu	285482
bnf_build_cycgen	26725
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785112
bnf_get_C	2819253
bnf_get_GD	276789
bnf_get_Ur	1392550
bnf_get_W	1397523
bnf_get_ga	271833
bnf_get_vbase	1392630
bnf_has_fu	285769
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841334
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65212
cache_prime_dec	921316
can_factor	18794748
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64008
clean_cols	93280
cleanarch	3071514
cleanarchunit	133880
compute_R	96416
compute_invres	64008
compute_multiple_of_R	121914
compute_multiple_of_R_pivot	579641
dbg_newrel	0
delete_FB	66266
delete_cache	64089
diagact_arch	64105
divide_p	5686741
divide_p_elt	2531
divide_p_id	185478
divide_p_quo	5498735
dump_gen	1228038
err_units	0
expand	0
expandext	31984
expbitprec	2840343
extract_full_lattice	64015
fact_ok	1228538
fact_update	2124101
factorgen	17382014
fixarch	1306951
free_GRHcheck	134440
genback	28784
get_archclean	40
get_clg2	64105
get_embs	122578
get_fs	7513459
get_log_embed	726111
get_norm_fact	1231482
get_norm_fact_primes	69
get_pr_lists	1392610
get_random_ideal	56627
get_regulator	48894
get_y	69
getfu	64008
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	134439
init_famat	65812
init_red_mod_units	1107812
init_rel	64089
inv_fact	0
isprincipal	174779
isprincipalall	1408720
isprincipalarch	1237091
isprincipalfact	31984
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62493
matbotidembs	55526
matenlarge	55527
modIm	204631
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64089
nfsign_from_logarch	162326
nfsign_fu	241152
nfsign_tu	239984
nfsign_units	35
not_given	396
nthideal	64008
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123472
prec_arch	1410513
primeneeded	64008
reallocate	64089
recover_partFB	1392610
red_mod_units	1107813
rel_embed	1017499
rnd_rel	56627
rnd_rel_par	0
rnd_rel_seq	56627
set_fact	2329577
set_rel_alpha	948844
signunits	7
small_norm	66764
small_norm_par	0
small_norm_prec	64000
small_norm_seq	66764
split_ideal	1392547
step	29161789
store	9538031
subFB_change	26657
subFBgen	66266
tailres	1129441
tailresback	2258880
trim_list	123472
triv_gen	464660
try_elt	1805
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16