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 30786-ffec283a2b) Lines: 2218 2538 87.4 % Date: 2026-04-07 09:25:56 Functions: 159 176 90.3 % Legend: Lines: hit not hit

Function Name	Hit count
Buchall	62618
Buchall_deg1	1204
Buchall_param	65257
FB_aut_perm	66306
FBgen	66302
Fincke_Pohst_bound	267540
Fincke_Pohst_ideal	267547
Fincke_Pohst_ideal_both	267546
Fincke_Pohst_ideal_par	0
FlxqX_chinese_unit	1379
GRHchk	496716
GRHok	2303842
RgC_expbitprec	1237090
RgM_expbitprec	48846
RgV_is1	105
SPLIT	1408956
SPLIT_i	1252979
SUnits_archclean	77
Ur_ZC_mul	1392550
Vbase_to_FB	3426
ZM_remove_unused	164
ZV_divrem	1392550
ZV_mul	7332
_nfnewprec	57787
act_arch	2057476
add	2250562
addRe_modIm	6907243
add_cyclotomic_units	64129
add_principal_part	32327
add_rel	2502520
add_rel_i	2987445
add_to_fact	2933456
already_known	2983274
assign_subFB	67028
automorphism_matrices	64118
automorphism_perms	64054
bad_check	96215
bad_subFB	308274
ballvol	66305
be_honest	7
bnf_build_cheapfu	285468
bnf_build_cycgen	26726
bnf_build_matalpha	20
bnf_build_units	50745
bnf_compactfu	37415
bnf_compactfu_mat	70
bnf_get_B	2785114
bnf_get_C	2819984
bnf_get_GD	276790
bnf_get_Ur	1392550
bnf_get_W	1397521
bnf_get_ga	271834
bnf_get_vbase	1392630
bnf_has_fu	285754
bnfinit0	2639
bnfinit_FP_worker	0
bnfisprincipal0	1841333
bnfnewprec	7
bnfnewprec_shallow	97
bnftestprimes	63
bnrnewprec	7
bnrnewprec_shallow	0
buchall_end	65260
cache_prime_dec	921977
can_factor	18794746
chinese_unit	94
chinese_unit_slice	274
chinese_unit_worker	274
class_group_gen	64057
clean_cols	93249
cleanarch	3071771
cleanarchunit	133979
compute_R	96276
compute_invres	64056
compute_multiple_of_R	121785
compute_multiple_of_R_pivot	578193
dbg_newrel	0
delete_FB	66305
delete_cache	64129
diagact_arch	64154
divide_p	5686594
divide_p_elt	2341
divide_p_id	185469
divide_p_quo	5498792
dump_gen	1228036
err_units	0
expand	0
expandext	32347
expbitprec	2840438
extract_full_lattice	64064
fact_ok	1228538
fact_update	2124569
factorgen	17382103
fixarch	1306995
free_GRHcheck	186221
genback	28784
get_archclean	40
get_clg2	64154
get_embs	122484
get_fs	7514413
get_log_embed	726124
get_norm_fact	1231483
get_norm_fact_primes	69
get_pr_lists	1392610
get_random_ideal	56524
get_regulator	48941
get_y	69
getfu	64056
i2print	0
idealHNF_mulred	3525
idealmulpowprime2	4761
init_GRHcheck	186219
init_famat	65861
init_red_mod_units	1107813
init_rel	64129
inv_fact	0
isprincipal	174779
isprincipalall	1409085
isprincipalarch	1237090
isprincipalfact	32347
isprincipalfact_or_fail	0
isprincipalforce	0
isprincipalgen	0
isprincipalgenforce	0
log2Mbound	94
log2fubound	94
makecycgen	4956
makematal	20
makeunits	24922
matbotid	62532
matbotidembs	55392
matenlarge	55392
modIm	204724
myprecdbl	73
needed_bitprec	3857
nf_cxlog_normalize	197126
nfcyclotomicunits	64129
nfsign_from_logarch	162325
nfsign_fu	241133
nfsign_tu	239974
nfsign_units	35
not_given	396
nthideal	64056
pack_FB	0
pr_index	3426
pr_orbit_fill	11865
pre_allocate	123378
prec_arch	1410879
primeneeded	64057
reallocate	64129
recover_partFB	1392609
red_mod_units	1107813
rel_embed	1017674
rnd_rel	56525
rnd_rel_par	0
rnd_rel_seq	56525
set_fact	2329342
set_rel_alpha	949362
signunits	7
small_norm	66780
small_norm_par	0
small_norm_prec	64050
small_norm_seq	66780
split_ideal	1392547
step	29168847
store	9537334
subFB_change	26648
subFBgen	66306
tailres	1130134
tailresback	2260265
trim_list	123378
triv_gen	464660
try_elt	1657
unpack_FB	0
vec_chinese_units	94
wr_rel	0

Generated by: LCOV version 1.16