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 30773-2078653b96) Lines: 2218 2538 87.4 % Date: 2026-04-04 09:27:12 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62629
Buchall_deg1	1204
Buchall_param	65269
FB_aut_perm	66306
FBgen	66305
Fincke_Pohst_bound	267594
Fincke_Pohst_ideal	267595
Fincke_Pohst_ideal_both	267595
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496724
GRHok	2304025
RgC_expbitprec	1237095
RgM_expbitprec	48845
RgV_is1	105
SPLIT	1408956
SPLIT_i	1252981
SUnits_archclean	77
Ur_ZC_mul	1392549
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392550
ZV_mul	7332
_nfnewprec	57792
act_arch	2057478
add	2250580
addRe_modIm	6907295
add_cyclotomic_units	64130
add_principal_part	32327
add_rel	2502569
add_rel_i	2987560
add_to_fact	2933505
already_known	2983375
assign_subFB	67048
automorphism_matrices	64118
automorphism_perms	64057
bad_check	96269
bad_subFB	308286
ballvol	66305
be_honest	7
bnf_build_cheapfu	285486
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37414
bnf_compactfu_mat	70
bnf_get_B	2785115
bnf_get_C	2819985
bnf_get_GD	276790
bnf_get_Ur	1392549
bnf_get_W	1397524
bnf_get_ga	271834
bnf_get_vbase	1392631
bnf_has_fu	285773
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841334
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65260
cache_prime_dec	921988
can_factor	18794302
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64056
clean_cols	93273
cleanarch	3071780
cleanarchunit	133977
compute_R	96331
compute_invres	64056
compute_multiple_of_R	121836
compute_multiple_of_R_pivot	578224
dbg_newrel	0
delete_FB	66306
delete_cache	64130
diagact_arch	64153
divide_p	5686622
divide_p_elt	2364
divide_p_id	185468
divide_p_quo	5498800
dump_gen	1228039
err_units	0
expand	0
expandext	32348
expbitprec	2840443
extract_full_lattice	64064
fact_ok	1228539
fact_update	2124582
factorgen	17381707
fixarch	1306996
free_GRHcheck	186235
genback	28784
get_archclean	40
get_clg2	64153
get_embs	122538
get_fs	7515392
get_log_embed	726179
get_norm_fact	1231480
get_norm_fact_primes	69
get_pr_lists	1392611
get_random_ideal	56573
get_regulator	48943
get_y	69
getfu	64053
i2print	0
idealHNF_mulred	3527
idealmulpowprime2	4761
init_GRHcheck	186225
init_famat	65860
init_red_mod_units	1107813
init_rel	64129
inv_fact	0
isprincipal	174779
isprincipalall	1409085
isprincipalarch	1237094
isprincipalfact	32347
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62534
matbotidembs	55443
matenlarge	55445
modIm	204726
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64130
nfsign_from_logarch	162319
nfsign_fu	241151
nfsign_tu	239985
nfsign_units	35
not_given	396
nthideal	64057
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123432
prec_arch	1410880
primeneeded	64056
reallocate	64129
recover_partFB	1392611
red_mod_units	1107813
rel_embed	1017780
rnd_rel	56574
rnd_rel_par	0
rnd_rel_seq	56574
set_fact	2329397
set_rel_alpha	949428
signunits	7
small_norm	66785
small_norm_par	0
small_norm_prec	64046
small_norm_seq	66785
split_ideal	1392548
step	29167440
store	9537414
subFB_change	26660
subFBgen	66306
tailres	1130085
tailresback	2260134
trim_list	123432
triv_gen	464660
try_elt	1672
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16