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 30651-3e52073f6d) Lines: 2218 2538 87.4 % Date: 2026-01-28 09:23:10 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	273
chinese_unit_worker	273
not_given	396
Buchall_deg1	1204
FlxqX_chinese_unit	1379
try_elt	1774
divide_p_elt	2499
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	26674
bnf_build_cycgen	26726
genback	28783
add_principal_part	31963
expandext	31984
isprincipalfact	31984
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48893
bnf_build_units	50745
matbotidembs	55496
matenlarge	55496
get_random_ideal	56597
rnd_rel	56597
rnd_rel_seq	56597
_nfnewprec	57729
matbotid	62490
Buchall	62572
getfu	64006
small_norm_prec	64006
compute_invres	64007
automorphism_perms	64008
class_group_gen	64008
nthideal	64008
primeneeded	64008
extract_full_lattice	64015
automorphism_matrices	64071
add_cyclotomic_units	64087
delete_cache	64087
init_rel	64087
nfcyclotomicunits	64087
reallocate	64087
diagact_arch	64105
get_clg2	64105
buchall_end	65210
Buchall_param	65211
init_famat	65812
FBgen	66262
delete_FB	66263
FB_aut_perm	66264
ballvol	66264
subFBgen	66264
small_norm	66763
small_norm_seq	66763
assign_subFB	67032
clean_cols	93215
bad_check	96327
compute_R	96387
compute_multiple_of_R	121885
get_embs	122545
pre_allocate	123440
trim_list	123440
cleanarchunit	133877
init_GRHcheck	134438
free_GRHcheck	134440
nfsign_from_logarch	162323
isprincipal	174779
divide_p_id	185478
nf_cxlog_normalize	197126
modIm	204632
nfsign_tu	239990
nfsign_fu	241160
Fincke_Pohst_bound	267619
Fincke_Pohst_ideal	267619
Fincke_Pohst_ideal_both	267619
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285481
bnf_has_fu	285767
bad_subFB	308361
triv_gen	464660
GRHchk	496431
compute_multiple_of_R_pivot	578331
get_log_embed	726054
cache_prime_dec	921296
set_rel_alpha	948725
rel_embed	1017339
init_red_mod_units	1107813
red_mod_units	1107813
tailres	1129427
dump_gen	1228038
fact_ok	1228540
get_norm_fact	1231478
RgC_expbitprec	1237092
isprincipalarch	1237093
SPLIT_i	1252980
fixarch	1306946
split_ideal	1392546
Ur_ZC_mul	1392548
ZV_divrem	1392548
bnf_get_Ur	1392548
get_pr_lists	1392610
recover_partFB	1392610
bnf_get_vbase	1392629
bnf_get_W	1397522
isprincipalall	1408721
SPLIT	1408958
prec_arch	1410517
GRHok	1530917
bnfisprincipal0	1841332
act_arch	2057340
fact_update	2124091
add	2250557
tailresback	2258854
set_fact	2329543
add_rel	2502595
bnf_get_B	2785110
bnf_get_C	2819258
expbitprec	2840342
add_to_fact	2933756
already_known	2983197
add_rel_i	2987302
cleanarch	3071518
divide_p_quo	5498800
divide_p	5686775
addRe_modIm	6906932
get_fs	7513786
store	9537991
factorgen	17382106
can_factor	18794842
step	29163159

Generated by: LCOV version 1.16