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 30605-980f9eb85c) Lines: 2218 2538 87.4 % Date: 2026-01-11 09:21:30 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	1792
divide_p_elt	2516
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	26663
bnf_build_cycgen	26726
genback	28783
add_principal_part	31962
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48894
bnf_build_units	50744
matbotidembs	55502
matenlarge	55503
get_random_ideal	56603
rnd_rel	56604
rnd_rel_seq	56604
_nfnewprec	57724
matbotid	62492
Buchall	62572
small_norm_prec	63995
automorphism_perms	64007
getfu	64007
nthideal	64007
primeneeded	64007
class_group_gen	64008
compute_invres	64008
extract_full_lattice	64015
automorphism_matrices	64071
add_cyclotomic_units	64088
delete_cache	64088
init_rel	64088
nfcyclotomicunits	64088
reallocate	64088
diagact_arch	64105
get_clg2	64105
Buchall_param	65211
buchall_end	65212
init_famat	65812
FBgen	66261
ballvol	66263
subFBgen	66264
FB_aut_perm	66265
delete_FB	66265
small_norm	66764
small_norm_seq	66764
assign_subFB	67032
clean_cols	93236
bad_check	96338
compute_R	96402
compute_multiple_of_R	121894
get_embs	122553
pre_allocate	123448
trim_list	123448
cleanarchunit	133881
free_GRHcheck	134441
init_GRHcheck	134441
nfsign_from_logarch	162322
isprincipal	174779
divide_p_id	185480
nf_cxlog_normalize	197126
modIm	204634
nfsign_tu	239984
nfsign_fu	241131
Fincke_Pohst_bound	267625
Fincke_Pohst_ideal_both	267630
Fincke_Pohst_ideal	267631
bnf_get_ga	271833
bnf_get_GD	276790
bnf_build_cheapfu	285481
bnf_has_fu	285768
bad_subFB	308313
triv_gen	464660
GRHchk	496430
compute_multiple_of_R_pivot	578662
get_log_embed	726072
cache_prime_dec	921311
set_rel_alpha	948731
rel_embed	1017383
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129384
dump_gen	1228038
fact_ok	1228538
get_norm_fact	1231481
RgC_expbitprec	1237091
isprincipalarch	1237091
SPLIT_i	1252979
fixarch	1306949
Ur_ZC_mul	1392548
ZV_divrem	1392548
bnf_get_Ur	1392548
split_ideal	1392549
get_pr_lists	1392612
recover_partFB	1392612
bnf_get_vbase	1392632
bnf_get_W	1397525
isprincipalall	1408721
SPLIT	1408953
prec_arch	1410514
GRHok	1530909
bnfisprincipal0	1841331
act_arch	2057327
fact_update	2124163
add	2250563
tailresback	2258762
set_fact	2329597
add_rel	2502644
bnf_get_B	2785115
bnf_get_C	2819250
expbitprec	2840342
add_to_fact	2933800
already_known	2983269
add_rel_i	2987417
cleanarch	3071520
divide_p_quo	5498833
divide_p	5686820
addRe_modIm	6906922
get_fs	7512608
store	9538146
factorgen	17381717
can_factor	18794466
step	29163465

Generated by: LCOV version 1.16