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 30640-c2c58e18c5) Lines: 2218 2538 87.4 % Date: 2026-01-27 08:51:18 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	1144
try_elt	1331
FlxqX_chinese_unit	1379
divide_p_elt	1915
bnfinit0	2639
Vbase_to_FB	3426
pr_index	3426
idealHNF_mulred	3466
makecycgen	3835
needed_bitprec	3857
idealmulpowprime2	4761
ZV_mul	7332
bnf_compactfu	10819
pr_orbit_fill	11865
bnf_build_cycgen	16443
subFB_change	20139
genback	24832
makeunits	24922
add_principal_part	31873
expandext	31894
isprincipalfact	31894
matbotidembs	36936
matenlarge	36936
RgM_expbitprec	39317
get_regulator	39414
get_random_ideal	43249
rnd_rel	43249
rnd_rel_seq	43249
_nfnewprec	46764
small_norm	49630
small_norm_seq	49630
matbotid	50547
Buchall	50602
bnf_build_units	50745
getfu	52085
class_group_gen	52086
small_norm_prec	52088
automorphism_perms	52090
compute_invres	52090
nthideal	52090
primeneeded	52090
extract_full_lattice	52092
delete_cache	52139
add_cyclotomic_units	52143
init_rel	52143
nfcyclotomicunits	52143
reallocate	52143
automorphism_matrices	52152
diagact_arch	52182
get_clg2	52182
buchall_end	53230
Buchall_param	53243
delete_FB	53758
FBgen	53761
FB_aut_perm	53762
ballvol	53762
subFBgen	53762
init_famat	53889
assign_subFB	54342
clean_cols	67351
bad_check	75630
compute_R	75692
nfsign_from_logarch	88343
compute_multiple_of_R	91490
get_embs	92041
pre_allocate	92931
trim_list	92931
nfsign_tu	102886
nfsign_fu	104059
cleanarchunit	109595
bnf_build_cheapfu	121831
bnf_has_fu	122118
free_GRHcheck	122519
init_GRHcheck	122520
divide_p_id	158434
modIm	171596
isprincipal	174467
nf_cxlog_normalize	197126
Fincke_Pohst_bound	220333
Fincke_Pohst_ideal	220335
Fincke_Pohst_ideal_both	220335
bad_subFB	249870
bnf_get_ga	264365
bnf_get_GD	268200
GRHchk	410075
triv_gen	459087
compute_multiple_of_R_pivot	467470
get_log_embed	618147
cache_prime_dec	748246
set_rel_alpha	773464
rel_embed	841284
tailres	921160
init_red_mod_units	1087860
red_mod_units	1087860
fact_ok	1160624
dump_gen	1161172
get_norm_fact	1164615
RgC_expbitprec	1169179
isprincipalarch	1169179
SPLIT_i	1212431
fixarch	1226673
Ur_ZC_mul	1325371
ZV_divrem	1325371
bnf_get_Ur	1325371
split_ideal	1325371
get_pr_lists	1325434
recover_partFB	1325434
bnf_get_vbase	1325454
bnf_get_W	1329226
isprincipalall	1341307
SPLIT	1341779
prec_arch	1342921
GRHok	1444512
bnfisprincipal0	1768438
tailresback	1842313
act_arch	1927773
fact_update	2026441
set_fact	2075745
add	2131046
add_rel	2220020
already_known	2597383
add_rel_i	2600148
bnf_get_B	2650761
add_to_fact	2661973
bnf_get_C	2684248
expbitprec	2716464
cleanarch	2907215
divide_p_quo	5200793
divide_p	5361134
get_fs	6356941
addRe_modIm	6625081
store	8913270
factorgen	16966488
can_factor	18311671
step	28336074

Generated by: LCOV version 1.16