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 30759-17b423fb9b) Lines: 2218 2538 87.4 % Date: 2026-03-21 09:26:11 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	1676
divide_p_elt	2359
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	24922
subFB_change	26667
bnf_build_cycgen	26726
genback	28783
add_principal_part	32326
isprincipalfact	32346
expandext	32347
bnf_compactfu	37412
RgM_expbitprec	48846
get_regulator	48943
bnf_build_units	50745
matbotidembs	55495
matenlarge	55495
get_random_ideal	56628
rnd_rel	56628
rnd_rel_seq	56628
_nfnewprec	57790
matbotid	62534
Buchall	62604
small_norm_prec	64050
automorphism_perms	64057
class_group_gen	64057
compute_invres	64057
getfu	64057
nthideal	64057
primeneeded	64057
extract_full_lattice	64064
automorphism_matrices	64117
init_rel	64128
reallocate	64128
add_cyclotomic_units	64130
delete_cache	64130
nfcyclotomicunits	64130
diagact_arch	64154
get_clg2	64154
Buchall_param	65250
buchall_end	65261
init_famat	65861
FBgen	66305
FB_aut_perm	66307
ballvol	66307
delete_FB	66307
subFBgen	66307
small_norm	66781
small_norm_seq	66781
assign_subFB	67039
clean_cols	93297
bad_check	96288
compute_R	96349
compute_multiple_of_R	121877
get_embs	122587
pre_allocate	123482
trim_list	123482
cleanarchunit	133978
nfsign_from_logarch	162321
isprincipal	174779
divide_p_id	185470
init_GRHcheck	186226
free_GRHcheck	186229
nf_cxlog_normalize	197126
modIm	204728
nfsign_tu	239986
nfsign_fu	241149
Fincke_Pohst_bound	267646
Fincke_Pohst_ideal	267646
Fincke_Pohst_ideal_both	267646
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285482
bnf_has_fu	285769
bad_subFB	308343
triv_gen	464660
GRHchk	496721
compute_multiple_of_R_pivot	578373
get_log_embed	726254
cache_prime_dec	921993
set_rel_alpha	949545
rel_embed	1017901
red_mod_units	1107811
init_red_mod_units	1107812
tailres	1130137
dump_gen	1228036
fact_ok	1228539
get_norm_fact	1231479
RgC_expbitprec	1237091
isprincipalarch	1237091
SPLIT_i	1252978
fixarch	1306994
ZV_divrem	1392547
split_ideal	1392548
Ur_ZC_mul	1392549
bnf_get_Ur	1392549
get_pr_lists	1392612
recover_partFB	1392612
bnf_get_vbase	1392631
bnf_get_W	1397524
SPLIT	1408957
isprincipalall	1409085
prec_arch	1410880
bnfisprincipal0	1841333
act_arch	2057461
fact_update	2124742
add	2250519
tailresback	2260258
GRHok	2303989
set_fact	2329523
add_rel	2502678
bnf_get_B	2785115
bnf_get_C	2819983
expbitprec	2840440
add_to_fact	2933616
already_known	2983426
add_rel_i	2987693
cleanarch	3071776
divide_p_quo	5498912
divide_p	5686739
addRe_modIm	6907269
get_fs	7516683
store	9537616
factorgen	17382107
can_factor	18794716
step	29168790

Generated by: LCOV version 1.16