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 30786-ffec283a2b) Lines: 2218 2538 87.4 % Date: 2026-04-08 09:25:27 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62625
Buchall_deg1	1204
Buchall_param	65267
FB_aut_perm	66306
FBgen	66307
Fincke_Pohst_bound	267630
Fincke_Pohst_ideal	267632
Fincke_Pohst_ideal_both	267632
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496719
GRHok	2303885
RgC_expbitprec	1237094
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408958
SPLIT_i	1252977
SUnits_archclean	77
Ur_ZC_mul	1392548
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392549
ZV_mul	7332
_nfnewprec	57791
act_arch	2057464
add	2250544
addRe_modIm	6907240
add_cyclotomic_units	64130
add_principal_part	32327
add_rel	2502694
add_rel_i	2987679
add_to_fact	2933633
already_known	2983504
assign_subFB	67040
automorphism_matrices	64119
automorphism_perms	64056
bad_check	96289
bad_subFB	308291
ballvol	66302
be_honest	7
bnf_build_cheapfu	285464
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50744
bnf_compactfu	37413
bnf_compactfu_mat	70
bnf_get_B	2785114
bnf_get_C	2819984
bnf_get_GD	276790
bnf_get_Ur	1392548
bnf_get_W	1397524
bnf_get_ga	271834
bnf_get_vbase	1392631
bnf_has_fu	285751
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	921979
can_factor	18794607
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64057
clean_cols	93283
cleanarch	3071778
cleanarchunit	133977
compute_R	96350
compute_invres	64057
compute_multiple_of_R	121871
compute_multiple_of_R_pivot	577964
dbg_newrel	0
delete_FB	66307
delete_cache	64130
diagact_arch	64153
divide_p	5686815
divide_p_elt	2359
divide_p_id	185469
divide_p_quo	5498993
dump_gen	1228038
err_units	0
expand	0
expandext	32348
expbitprec	2840444
extract_full_lattice	64063
fact_ok	1228540
fact_update	2124902
factorgen	17381932
fixarch	1306995
free_GRHcheck	186234
genback	28784
get_archclean	40
get_clg2	64153
get_embs	122573
get_fs	7514452
get_log_embed	726224
get_norm_fact	1231480
get_norm_fact_primes	69
get_pr_lists	1392612
get_random_ideal	56607
get_regulator	48942
get_y	69
getfu	64057
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	186227
init_famat	65861
init_red_mod_units	1107813
init_rel	64128
inv_fact	0
isprincipal	174779
isprincipalall	1409084
isprincipalarch	1237094
isprincipalfact	32347
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24921
matbotid	62534
matbotidembs	55481
matenlarge	55481
modIm	204731
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64130
nfsign_from_logarch	162323
nfsign_fu	241133
nfsign_tu	239973
nfsign_units	35
not_given	396
nthideal	64056
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123466
prec_arch	1410882
primeneeded	64056
reallocate	64128
recover_partFB	1392612
red_mod_units	1107813
rel_embed	1017828
rnd_rel	56607
rnd_rel_par	0
rnd_rel_seq	56607
set_fact	2329525
set_rel_alpha	949496
signunits	7
small_norm	66786
small_norm_par	0
small_norm_prec	64052
small_norm_seq	66786
split_ideal	1392548
step	29168141
store	9537743
subFB_change	26659
subFBgen	66303
tailres	1130130
tailresback	2260240
trim_list	123466
triv_gen	464660
try_elt	1678
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16