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 30571-c0dfe82732) Lines: 2215 2530 87.5 % Date: 2025-12-10 09:22:03 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	1703
divide_p_elt	2406
bnfinit0	2639
Vbase_to_FB	3461
pr_index	3461
idealHNF_mulred	3536
needed_bitprec	3857
idealmulpowprime2	4663
makecycgen	4956
ZV_mul	7325
pr_orbit_fill	11865
makeunits	24915
subFB_change	26405
bnf_build_cycgen	26726
genback	28812
add_principal_part	32172
expandext	32194
isprincipalfact	32194
bnf_compactfu	37428
RgM_expbitprec	48803
get_regulator	48901
bnf_build_units	50738
matbotidembs	55513
matenlarge	55513
rnd_rel	55620
rnd_rel_seq	55620
get_random_ideal	55621
_nfnewprec	57743
matbotid	62509
Buchall	62602
small_norm_prec	64033
automorphism_perms	64035
class_group_gen	64036
compute_invres	64036
getfu	64036
nthideal	64036
primeneeded	64036
extract_full_lattice	64042
automorphism_matrices	64099
add_cyclotomic_units	64112
delete_cache	64112
init_rel	64112
nfcyclotomicunits	64112
reallocate	64112
diagact_arch	64132
get_clg2	64132
buchall_end	65240
Buchall_param	65241
init_famat	65840
ballvol	66287
FBgen	66288
subFBgen	66288
FB_aut_perm	66289
delete_FB	66289
small_norm	66817
small_norm_seq	66817
assign_subFB	67045
clean_cols	93055
bad_check	96250
compute_R	96311
compute_multiple_of_R	121778
get_embs	122475
pre_allocate	122513
trim_list	122513
cleanarchunit	133916
init_GRHcheck	134698
free_GRHcheck	134701
nfsign_from_logarch	162327
isprincipal	174793
divide_p_id	185521
nf_cxlog_normalize	197126
modIm	204641
nfsign_tu	239973
nfsign_fu	241153
Fincke_Pohst_bound	266687
Fincke_Pohst_ideal	266688
Fincke_Pohst_ideal_both	266689
bnf_get_ga	271854
bnf_get_GD	276810
bnf_build_cheapfu	285491
bnf_has_fu	285778
bad_subFB	307711
triv_gen	464660
GRHchk	496654
compute_multiple_of_R_pivot	576983
get_log_embed	726438
cache_prime_dec	921664
set_rel_alpha	949066
rel_embed	1017709
red_mod_units	1107840
init_red_mod_units	1107841
tailres	1129944
dump_gen	1228060
fact_ok	1228576
get_norm_fact	1231499
isprincipalarch	1237113
RgC_expbitprec	1237115
SPLIT_i	1252849
fixarch	1306974
Ur_ZC_mul	1392586
ZV_divrem	1392586
bnf_get_Ur	1392586
split_ideal	1392587
get_pr_lists	1392651
recover_partFB	1392651
bnf_get_vbase	1392670
bnf_get_W	1397563
isprincipalall	1408972
SPLIT	1409001
prec_arch	1410779
GRHok	1533177
bnfisprincipal0	1841375
fact_update	2052696
act_arch	2057548
add	2250654
tailresback	2259871
set_fact	2316504
add_rel	2489655
bnf_get_B	2785197
bnf_get_C	2819770
expbitprec	2840405
add_to_fact	2920858
already_known	2970604
add_rel_i	2974746
cleanarch	3071834
divide_p_quo	5437860
divide_p	5625783
addRe_modIm	6907393
get_fs	7516939
store	9465772
factorgen	16944197
can_factor	18356935
step	28419095

Generated by: LCOV version 1.16