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 - arith1.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30673-b6380924e9) Lines: 2080 2301 90.4 % Date: 2026-02-08 09:23:25 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188789
Fl_2gener_pre_i	65849
Fl_2powu	4358363
Fl_2powu_pre	12893667
Fl_lgener_pre_all	147097
Fl_log	132362
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29088
Fl_log_pre	29486
Fl_order	546542
Fl_powers	296050
Fl_powers_pre	13056089
Fl_powu	141466467
Fl_powu_pre	166361401
Fl_sqrt	12403648
Fl_sqrt_i	12525212
Fl_sqrt_pre	23367132
Fl_sqrt_pre_i	35966492
Fl_sqrtl	0
Fl_sqrtl_pre	229965
Fl_sqrtl_raw	232924
Fl_sqrtn	233411
Fl_sqrtn_pre	233411
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819443
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6096765
Fp_invmBarrett	14036
Fp_log	4259580
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56127
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30252
Fp_log_use_index	5039795
Fp_order	136408
Fp_pow	37753512
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346190
Fp_powu	1754401
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869605
Fp_sqrt	4844619
Fp_sqrt_i	4898297
Fp_sqrt_ii	75188
Fp_sqrtn	173541
Fp_sqrts	18955
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215659
ZM_nv_mod_tree_t	221116
ZT_sqr	13610414
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156866
ZV_chinese_tree	40894479
ZV_chinesetree	2630310
ZV_invdivexact	2630296
ZV_nv_mod_tree	1236306
ZV_producttree	2634151
ZV_sqr	2630310
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254466
ZX_nv_mod_tree	3100188
Z_ZV_mod	0
Z_ZV_mod_tree	58190908
Z_chinese	2142
Z_chinese_all	268124
Z_chinese_coprime	547301
Z_chinese_post	3072968
Z_chinese_pre	271849
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228422
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603419
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9358834
_mul2_remii	3526147
_mul2_remiibar	1797854
_mul_montred	6664410
_mul_remii	1484110
_mul_remiibar	717268
_psi	1714
_sqr_montred	63047451
_sqr_remii	23379162
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105639
bestapprPade	119
bestapprPade0	126
bestappr_Q	2297367
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1276792
bestappr_ser	98
check_kernel	63
checkp	2578544
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460699
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56802
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980365
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463114
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5846493
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661639
intmod2polmod	21
is_gener_Fl	1662335
is_gener_Fp	13968
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27624907
kronecker	12751303
krosi	159682
kross	100423550
kroui	35695
krouodd	195377
krouu	102599427
krouu_s	235453222
lcmii	54535372
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498565
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159073
mulu_interval_step	92798
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1515019
nmV_chinese_center	378600
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120570
nmV_polint_center_tree	378599
nmV_polint_center_tree_seq	120570
nmV_polint_center_tree_worker	974713
nonsquare1_Fl	12030043
nonsquare_Fl	7930
nonsquare_Fp	1458
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
nxCV_polint_center_tree	6585
nxMV_chinese_center	104
nxMV_chinese_center_tree_seq	491
nxMV_polint_center_tree	104
nxMV_polint_center_tree_seq	491
nxMV_polint_center_tree_worker	1225
nxV_chinese_center	429321
nxV_chinese_center_tree	303797
nxV_polint_center_tree	875547
odd_prime_divisors	1812
ome	334613330
opt_param	63
padic2mod	21
pgener_Fl	575165
pgener_Fl_local	1081237
pgener_Fp	44282
pgener_Fp_local	412326
pgener_Zl	205801
pgener_Zp	171045
pnqn	0
polint_chinese	378704
remove2	1812
rootsof1_Fl	215524
rootsof1_Fp	0
rootsof1u_Fp	3033
rt	169813
serPade	49
sersfcont	0
sfcont2	14
sqrt_Cipolla	0
sqrt_Cipolla_msqr	0
sqrt_Cipolla_sqr	0
to_ZX	1889348
tr	59731
u_chinese_coprime	1639065
u_chinese_post	1639084
u_is_gener_expo	544979
u_odd_prime_divisors	463936
u_remove2	463936
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16