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 30604-e5d817ee12) Lines: 2218 2538 87.4 % Date: 2026-01-09 09:21:43 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	1810
divide_p_elt	2537
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3523
needed_bitprec	3857
idealmulpowprime2	4761
makecycgen	4956
ZV_mul	7332
pr_orbit_fill	11865
makeunits	24922
subFB_change	26663
bnf_build_cycgen	26726
genback	28784
add_principal_part	31962
expandext	31982
isprincipalfact	31982
bnf_compactfu	37415
RgM_expbitprec	48797
get_regulator	48893
bnf_build_units	50745
matbotidembs	55516
matenlarge	55518
get_random_ideal	56615
rnd_rel	56615
rnd_rel_seq	56615
_nfnewprec	57725
matbotid	62492
Buchall	62573
small_norm_prec	63992
compute_invres	64004
getfu	64005
automorphism_perms	64006
class_group_gen	64006
nthideal	64008
primeneeded	64008
extract_full_lattice	64013
automorphism_matrices	64069
add_cyclotomic_units	64089
delete_cache	64089
init_rel	64089
nfcyclotomicunits	64089
reallocate	64089
diagact_arch	64104
get_clg2	64104
buchall_end	65211
Buchall_param	65217
init_famat	65812
FBgen	66264
FB_aut_perm	66265
delete_FB	66265
ballvol	66266
subFBgen	66266
small_norm	66766
small_norm_seq	66766
assign_subFB	67036
clean_cols	93245
bad_check	96327
compute_R	96389
compute_multiple_of_R	121902
get_embs	122570
pre_allocate	123464
trim_list	123464
cleanarchunit	133880
init_GRHcheck	134435
free_GRHcheck	134440
nfsign_from_logarch	162328
isprincipal	174778
divide_p_id	185479
nf_cxlog_normalize	197126
modIm	204632
nfsign_tu	239986
nfsign_fu	241153
Fincke_Pohst_bound	267644
Fincke_Pohst_ideal	267648
Fincke_Pohst_ideal_both	267648
bnf_get_ga	271834
bnf_get_GD	276790
bnf_build_cheapfu	285485
bnf_has_fu	285770
bad_subFB	308327
triv_gen	464660
GRHchk	496421
compute_multiple_of_R_pivot	578685
get_log_embed	726098
cache_prime_dec	921292
set_rel_alpha	948777
rel_embed	1017429
init_red_mod_units	1107812
red_mod_units	1107812
tailres	1129401
dump_gen	1228035
fact_ok	1228536
get_norm_fact	1231482
RgC_expbitprec	1237092
isprincipalarch	1237093
SPLIT_i	1252980
fixarch	1306950
split_ideal	1392548
Ur_ZC_mul	1392551
ZV_divrem	1392551
bnf_get_Ur	1392551
get_pr_lists	1392611
recover_partFB	1392611
bnf_get_vbase	1392631
bnf_get_W	1397524
isprincipalall	1408720
SPLIT	1408955
prec_arch	1410513
GRHok	1530840
bnfisprincipal0	1841334
act_arch	2057342
fact_update	2124377
add	2250579
tailresback	2258799
set_fact	2329633
add_rel	2502691
bnf_get_B	2785114
bnf_get_C	2819251
expbitprec	2840342
add_to_fact	2933825
already_known	2983337
add_rel_i	2987489
cleanarch	3071522
divide_p_quo	5498874
divide_p	5686884
addRe_modIm	6906911
get_fs	7512668
store	9538273
factorgen	17381611
can_factor	18794355
step	29162185

Generated by: LCOV version 1.16