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 30754-316d984fc8) Lines: 2218 2538 87.4 % Date: 2026-03-19 09:26:57 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	1692
divide_p_elt	2381
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3527
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26660
bnf_build_cycgen	26725
genback	28784
add_principal_part	32327
expandext	32348
isprincipalfact	32348
bnf_compactfu	37415
RgM_expbitprec	48846
get_regulator	48942
bnf_build_units	50745
matbotidembs	55434
matenlarge	55434
get_random_ideal	56558
rnd_rel	56558
rnd_rel_seq	56558
_nfnewprec	57790
matbotid	62535
Buchall	62613
small_norm_prec	64047
class_group_gen	64056
getfu	64056
nthideal	64056
automorphism_perms	64057
compute_invres	64057
primeneeded	64057
extract_full_lattice	64064
automorphism_matrices	64118
add_cyclotomic_units	64131
delete_cache	64131
init_rel	64131
nfcyclotomicunits	64131
reallocate	64131
diagact_arch	64154
get_clg2	64154
Buchall_param	65255
buchall_end	65261
init_famat	65861
FBgen	66307
FB_aut_perm	66308
ballvol	66308
delete_FB	66308
subFBgen	66308
small_norm	66789
small_norm_seq	66789
assign_subFB	67035
clean_cols	93263
bad_check	96239
compute_R	96298
compute_multiple_of_R	121829
get_embs	122527
pre_allocate	123422
trim_list	123422
cleanarchunit	133979
nfsign_from_logarch	162323
isprincipal	174779
divide_p_id	185469
init_GRHcheck	186222
free_GRHcheck	186226
nf_cxlog_normalize	197126
modIm	204727
nfsign_tu	239990
nfsign_fu	241161
Fincke_Pohst_ideal	267573
Fincke_Pohst_bound	267574
Fincke_Pohst_ideal_both	267574
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285485
bnf_has_fu	285772
bad_subFB	308311
triv_gen	464660
GRHchk	496723
compute_multiple_of_R_pivot	577369
get_log_embed	726189
cache_prime_dec	921994
set_rel_alpha	949311
rel_embed	1017705
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1130167
dump_gen	1228037
fact_ok	1228540
get_norm_fact	1231481
RgC_expbitprec	1237095
isprincipalarch	1237095
SPLIT_i	1252978
fixarch	1306999
Ur_ZC_mul	1392547
bnf_get_Ur	1392547
ZV_divrem	1392548
split_ideal	1392548
get_pr_lists	1392612
recover_partFB	1392612
bnf_get_vbase	1392631
bnf_get_W	1397524
SPLIT	1408951
isprincipalall	1409085
prec_arch	1410882
bnfisprincipal0	1841334
act_arch	2057474
fact_update	2124773
add	2250576
tailresback	2260313
GRHok	2303948
set_fact	2329426
add_rel	2502591
bnf_get_B	2785116
bnf_get_C	2819986
expbitprec	2840445
add_to_fact	2933525
already_known	2983311
add_rel_i	2987496
cleanarch	3071785
divide_p_quo	5498821
divide_p	5686669
addRe_modIm	6907284
get_fs	7516544
store	9537513
factorgen	17381986
can_factor	18794618
step	29167811

Generated by: LCOV version 1.16