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: 2026-04-07 09:25:56 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	1657
divide_p_elt	2341
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3525
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26648
bnf_build_cycgen	26726
genback	28784
add_principal_part	32327
expandext	32347
isprincipalfact	32347
bnf_compactfu	37415
RgM_expbitprec	48846
get_regulator	48941
bnf_build_units	50745
matbotidembs	55392
matenlarge	55392
get_random_ideal	56524
rnd_rel	56525
rnd_rel_seq	56525
_nfnewprec	57787
matbotid	62532
Buchall	62618
small_norm_prec	64050
automorphism_perms	64054
compute_invres	64056
getfu	64056
nthideal	64056
class_group_gen	64057
primeneeded	64057
extract_full_lattice	64064
automorphism_matrices	64118
add_cyclotomic_units	64129
delete_cache	64129
init_rel	64129
nfcyclotomicunits	64129
reallocate	64129
diagact_arch	64154
get_clg2	64154
Buchall_param	65257
buchall_end	65260
init_famat	65861
FBgen	66302
ballvol	66305
delete_FB	66305
FB_aut_perm	66306
subFBgen	66306
small_norm	66780
small_norm_seq	66780
assign_subFB	67028
clean_cols	93249
bad_check	96215
compute_R	96276
compute_multiple_of_R	121785
get_embs	122484
pre_allocate	123378
trim_list	123378
cleanarchunit	133979
nfsign_from_logarch	162325
isprincipal	174779
divide_p_id	185469
init_GRHcheck	186219
free_GRHcheck	186221
nf_cxlog_normalize	197126
modIm	204724
nfsign_tu	239974
nfsign_fu	241133
Fincke_Pohst_bound	267540
Fincke_Pohst_ideal_both	267546
Fincke_Pohst_ideal	267547
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285468
bnf_has_fu	285754
bad_subFB	308274
triv_gen	464660
GRHchk	496716
compute_multiple_of_R_pivot	578193
get_log_embed	726124
cache_prime_dec	921977
set_rel_alpha	949362
rel_embed	1017674
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1130134
dump_gen	1228036
fact_ok	1228538
get_norm_fact	1231483
RgC_expbitprec	1237090
isprincipalarch	1237090
SPLIT_i	1252979
fixarch	1306995
split_ideal	1392547
Ur_ZC_mul	1392550
ZV_divrem	1392550
bnf_get_Ur	1392550
recover_partFB	1392609
get_pr_lists	1392610
bnf_get_vbase	1392630
bnf_get_W	1397521
SPLIT	1408956
isprincipalall	1409085
prec_arch	1410879
bnfisprincipal0	1841333
act_arch	2057476
fact_update	2124569
add	2250562
tailresback	2260265
GRHok	2303842
set_fact	2329342
add_rel	2502520
bnf_get_B	2785114
bnf_get_C	2819984
expbitprec	2840438
add_to_fact	2933456
already_known	2983274
add_rel_i	2987445
cleanarch	3071771
divide_p_quo	5498792
divide_p	5686594
addRe_modIm	6907243
get_fs	7514413
store	9537334
factorgen	17382103
can_factor	18794746
step	29168847

Generated by: LCOV version 1.16