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 30793-1ceee7ca5f) Lines: 2218 2538 87.4 % Date: 2026-04-10 09:27:03 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	1658
divide_p_elt	2334
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3524
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24921
subFB_change	26676
bnf_build_cycgen	26726
genback	28784
add_principal_part	32327
expandext	32348
isprincipalfact	32348
bnf_compactfu	37415
RgM_expbitprec	48846
get_regulator	48941
bnf_build_units	50744
matbotidembs	55465
matenlarge	55465
get_random_ideal	56600
rnd_rel	56600
rnd_rel_seq	56600
_nfnewprec	57791
matbotid	62533
Buchall	62623
small_norm_prec	64054
getfu	64056
automorphism_perms	64057
class_group_gen	64057
compute_invres	64057
nthideal	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	64152
get_clg2	64152
buchall_end	65260
Buchall_param	65261
init_famat	65861
ballvol	66304
FB_aut_perm	66305
FBgen	66305
delete_FB	66305
subFBgen	66306
small_norm	66778
small_norm_seq	66778
assign_subFB	67041
clean_cols	93334
bad_check	96257
compute_R	96320
compute_multiple_of_R	121864
get_embs	122556
pre_allocate	123450
trim_list	123450
cleanarchunit	133979
nfsign_from_logarch	162328
isprincipal	174779
divide_p_id	185469
init_GRHcheck	186220
free_GRHcheck	186225
nf_cxlog_normalize	197126
modIm	204729
nfsign_tu	239981
nfsign_fu	241154
Fincke_Pohst_bound	267609
Fincke_Pohst_ideal	267616
Fincke_Pohst_ideal_both	267616
bnf_get_ga	271833
bnf_get_GD	276790
bnf_build_cheapfu	285486
bnf_has_fu	285773
bad_subFB	308308
triv_gen	464660
GRHchk	496725
compute_multiple_of_R_pivot	579156
get_log_embed	726213
cache_prime_dec	921997
set_rel_alpha	949531
rel_embed	1017876
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1130173
dump_gen	1228039
fact_ok	1228537
get_norm_fact	1231483
RgC_expbitprec	1237091
isprincipalarch	1237094
SPLIT_i	1252981
fixarch	1306995
split_ideal	1392546
Ur_ZC_mul	1392550
bnf_get_Ur	1392550
ZV_divrem	1392551
get_pr_lists	1392610
recover_partFB	1392610
bnf_get_vbase	1392629
bnf_get_W	1397522
SPLIT	1408957
isprincipalall	1409085
prec_arch	1410880
bnfisprincipal0	1841334
act_arch	2057466
fact_update	2124831
add	2250560
tailresback	2260332
GRHok	2303921
set_fact	2329439
add_rel	2502595
bnf_get_B	2785116
bnf_get_C	2819982
expbitprec	2840441
add_to_fact	2933557
already_known	2983436
add_rel_i	2987618
cleanarch	3071754
divide_p_quo	5498860
divide_p	5686656
addRe_modIm	6907250
get_fs	7516187
store	9537470
factorgen	17381867
can_factor	18794453
step	29167344

Generated by: LCOV version 1.16