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 30674-be81ecfdd4) Lines: 2080 2301 90.4 % Date: 2026-02-10 09:23:17 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_log_Fp	0
Fl_sqrtl	0
ZMV_producttree	0
Z_ZV_mod	0
Z_nv_mod	0
gcf2	0
nmV_chinese_center_tree	0
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
pnqn	0
rootsof1_Fp	0
sersfcont	0
sqrt_Cipolla	0
sqrt_Cipolla_msqr	0
sqrt_Cipolla_sqr	0
bestappr_frac	7
fibo	7
sfcont2	14
intmod2polmod	21
padic2mod	21
gc_empty	42
mod_to_frac	42
contfrac0	49
serPade	49
err_oo	56
lucas	56
Fp_log_index	63
Fp_log_sieve	63
check_kernel	63
compute_nbgen	63
opt_param	63
znorder	63
Fp_factored_order	70
Zp_order	70
bestappr_ser	98
get_PHI	98
nxMV_chinese_center	104
nxMV_polint_center_tree	104
Fp_pow_init	105
mpprimorial	105
_gc_upto	112
mod_to_rfrac	112
bestapprPade	119
bestappr_RgX	119
Fp_log_find_ind	126
Fp_log_find_rel	126
bestapprPade0	126
gcf	126
znlog_rec	126
_Fp_rand	160
err_p	161
factorial_Fp	186
err_prec	196
lift_padic	210
znlog	238
gener_Zp	259
contfracpnqn	266
znprimroot	329
Fp_gausssum	351
lift_intmod	420
ZXM_nv_mod_tree	491
nxMV_chinese_center_tree_seq	491
nxMV_polint_center_tree_seq	491
FpV_prod	497
muls_interval	595
Fp_rootsof1	820
ECP_psi	837
_computeG	837
nxMV_polint_center_tree_worker	1225
nonsquare_Fp	1458
_psi	1714
odd_prime_divisors	1812
remove2	1812
Z_chinese	2142
addifsmooth1	2163
chinese1	2415
rootsof1u_Fp	3033
Fp_2gener	3222
is_gener_expo	4909
ZV_chinese	5141
ZVV_nv_mod_tree	5457
ncV_chinese_center_tree	5457
chinese	5495
ZXC_nv_mod_tree	5634
Fp_2gener_all	5909
Fp_powers	5931
nxCV_polint_center_tree	6585
get_Fp_field	6961
mphilbertoo	7329
nonsquare_Fl	7930
ncV_chinese_center	10333
is_gener_Fp	13978
Fp_invmBarrett	14036
Fp_sqrts	18949
_Fp_s	19073
Fp_2gener_i	19392
Fl_log_naive_pre	29042
Fl_log_pre	29440
Fp_log_sieve_worker	30254
_Fp_inv	34301
kroui	35705
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56551
factorial_Fl	56805
tr	59731
hilbert	62314
Fl_2gener_pre_i	65849
istotient	70000
Fp_sqrt_ii	75161
addifsmooth2	83825
mulu_interval_step	92797
bestappr	105616
nmV_polint_center_tree_seq	120554
nmV_chinese_center_tree_seq	120555
Fl_log	132361
Fl_log_naive	132361
Fp_order	136407
hilbertii	140826
Fl_lgener_pre_all	147053
ZV_chinese_center	156866
mulu_interval	159078
krosi	159682
rt	169813
pgener_Zp	171045
Fp_sqrtn	173541
Fl_2gener_pre	188820
krouodd	195387
pgener_Zl	205801
rootsof1_Fl	215521
ZM_nv_mod_tree	215619
ZM_nv_mod_tree_t	221076
Fl_sqrtl_pre	229921
Fl_sqrtl_raw	232883
Fl_sqrtn	233410
Fl_sqrtn_pre	233410
ZXX_nv_mod_tree	254473
_Fp_equal0	260711
Z_chinese_all	268116
Z_chinese_pre	271839
Fl_powers	296050
nxV_chinese_center_tree	303797
Z_factor_listP	350651
nmV_chinese_center	378546
nmV_polint_center_tree	378546
polint_chinese	378650
pgener_Fp_local	412319
nxV_chinese_center	429320
u_odd_prime_divisors	463919
u_remove2	463919
mpfact	498569
u_is_gener_expo	544966
Fl_order	546541
Z_chinese_coprime	547182
pgener_Fl	575143
_Fp_rmul	575252
istotient_i	621565
init_montdata	661617
_mul_remiibar	717268
Fp_select_red	869546
nxV_polint_center_tree	875518
_Fp_red	889818
ZV_allpnqn	894831
nmV_polint_center_tree_worker	974619
gc_chinese	980310
pgener_Fl_local	1081204
_Fp_neg	1086813
_Fp_add	1175498
ZV_nv_mod_tree	1236136
bestappr_real	1274533
Fp_pows	1346202
_mul_remii	1474629
ncV_polint_center_tree	1514893
u_chinese_coprime	1638768
u_chinese_post	1638798
is_gener_Fl	1662300
Fp_powu	1754387
_mul2_remiibar	1797854
to_ZX	1889307
chinese1_coprime_Z_aux	2253538
bestappr_Q	2294079
chinese1_coprime_Z	2460687
gen_chinese	2463102
checkp	2570392
ZV_invdivexact	2630232
ZV_chinesetree	2630234
ZV_sqr	2630245
ZV_producttree	2634093
Z_chinese_post	3072827
ZX_nv_mod_tree	3100129
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3529107
Fp_log	4259566
Fl_2powu	4358536
Fp_sqrt	4844778
Fp_sqrt_i	4898458
Fp_log_use_index	5039785
gome	5846510
Fp_invgen	6095645
_mul_montred	6664164
_sqr_remiibar	7579293
_Fp_sqr	8134253
Fp_rem_mBarrett	8296561
Fp_easylog	8819401
_mul2_montred	9361919
nonsquare1_Fl	12019431
Fl_sqrt	12405195
Fl_sqrt_i	12526583
kronecker	12751281
Fl_2powu_pre	12891114
Fl_powers_pre	13037041
ZT_sqr	13609868
_Fp_mul	14228490
Fl_sqrt_pre	23342238
_sqr_remii	23379842
kroiu	27627407
_Fp_pow	28603373
Fl_sqrt_pre_i	35941711
Fp_pow	37753422
ZV_chinese_tree	40836994
lcmii	54534313
Z_ZV_mod_tree	58198517
_sqr_montred	63068893
kross	100423546
krouu	102541182
Fl_powu	141339593
Fl_powu_pre	166256590
krouu_s	235399074
ome	334417055

Generated by: LCOV version 1.16