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 30861-40e9da58f9) Lines: 2218 2538 87.4 % Date: 2026-05-04 09:27:01 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62624
Buchall_deg1	1204
Buchall_param	65270
FB_aut_perm	66312
FBgen	66305
Fincke_Pohst_bound	267599
Fincke_Pohst_ideal	267601
Fincke_Pohst_ideal_both	267601
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496768
GRHok	2304054
RgC_expbitprec	1238640
RgM_expbitprec	48853
RgV_is1	105
SPLIT	1410506
SPLIT_i	1254116
SUnits_archclean	77
Ur_ZC_mul	1394096
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1394095
ZV_mul	7332
_nfnewprec	57796
act_arch	2059050
add	2252534
addRe_modIm	6917602
add_cyclotomic_units	64135
add_principal_part	32326
add_rel	2502563
add_rel_i	2987447
add_to_fact	2933503
already_known	2983267
assign_subFB	67043
automorphism_matrices	64126
automorphism_perms	64063
bad_check	96239
bad_subFB	308317
ballvol	66312
be_honest	7
bnf_build_cheapfu	285481
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37421
bnf_compactfu_mat	70
bnf_get_B	2788213
bnf_get_C	2823077
bnf_get_GD	276790
bnf_get_Ur	1394096
bnf_get_W	1399073
bnf_get_ga	271834
bnf_get_vbase	1394180
bnf_has_fu	285768
bnfinit0	2646
bnfinit_FP_worker	0
bnfisprincipal0	1843139
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65268
cache_prime_dec	922078
can_factor	18797277
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64064
clean_cols	93284
cleanarch	3076965
cleanarchunit	133994
compute_R	96304
compute_invres	64064
compute_multiple_of_R	121831
compute_multiple_of_R_pivot	577181
dbg_newrel	0
delete_FB	66312
delete_cache	64135
diagact_arch	64161
divide_p	5686970
divide_p_elt	2314
divide_p_id	185881
divide_p_quo	5498778
dump_gen	1229582
err_units	0
expand	0
expandext	32347
expbitprec	2843551
extract_full_lattice	64067
fact_ok	1230084
fact_update	2124847
factorgen	17383113
fixarch	1308552
free_GRHcheck	186241
genback	28783
get_archclean	40
get_clg2	64161
get_embs	122525
get_fs	7516908
get_log_embed	726187
get_norm_fact	1233028
get_norm_fact_primes	69
get_pr_lists	1394160
get_random_ideal	56570
get_regulator	48949
get_y	69
getfu	64064
i2print	0
idealHNF_mulred	3526
idealmulpowprime2	4761
init_GRHcheck	186237
init_famat	65868
init_red_mod_units	1109359
init_rel	64135
inv_fact	0
isprincipal	174779
isprincipalall	1410631
isprincipalarch	1238641
isprincipalfact	32347
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62539
matbotidembs	55427
matenlarge	55427
modIm	204743
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	199199
nfcyclotomicunits	64135
nfsign_from_logarch	162326
nfsign_fu	241163
nfsign_tu	239985
nfsign_units	35
not_given	396
nthideal	64064
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123418
prec_arch	1412427
primeneeded	64064
reallocate	64135
recover_partFB	1394160
red_mod_units	1109359
rel_embed	1017706
rnd_rel	56570
rnd_rel_par	0
rnd_rel_seq	56570
set_fact	2329374
set_rel_alpha	949403
signunits	7
small_norm	66778
small_norm_par	0
small_norm_prec	64059
small_norm_seq	66778
split_ideal	1394097
step	29167792
store	9537751
subFB_change	26679
subFBgen	66312
tailres	1130283
tailresback	2260551
trim_list	123418
triv_gen	464919
try_elt	1641
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16