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 30586-ccf601f509) Lines: 2080 2301 90.4 % Date: 2025-12-25 09:21:36 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188803
Fl_2gener_pre_i	65849
Fl_2powu	4358122
Fl_2powu_pre	12895781
Fl_lgener_pre_all	147102
Fl_log	132362
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29069
Fl_log_pre	29467
Fl_order	546539
Fl_powers	296050
Fl_powers_pre	13051702
Fl_powu	141458310
Fl_powu_pre	166249700
Fl_sqrt	12404393
Fl_sqrt_i	12526248
Fl_sqrt_pre	23351705
Fl_sqrt_pre_i	35950664
Fl_sqrtl	0
Fl_sqrtl_pre	229950
Fl_sqrtl_raw	232911
Fl_sqrtn	233411
Fl_sqrtn_pre	233411
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819436
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6091094
Fp_invmBarrett	14036
Fp_log	4259582
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56144
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30253
Fp_log_use_index	5039756
Fp_order	136406
Fp_pow	37753047
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346191
Fp_powu	1754371
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869591
Fp_sqrt	4844492
Fp_sqrt_i	4898159
Fp_sqrt_ii	75189
Fp_sqrtn	173541
Fp_sqrts	18954
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215413
ZM_nv_mod_tree_t	220869
ZT_sqr	13612271
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	157106
ZV_chinese_tree	40751539
ZV_chinesetree	2630812
ZV_invdivexact	2630812
ZV_nv_mod_tree	1234910
ZV_producttree	2634680
ZV_sqr	2630818
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254475
ZX_nv_mod_tree	3100185
Z_ZV_mod	0
Z_ZV_mod_tree	58132270
Z_chinese	2142
Z_chinese_all	268106
Z_chinese_coprime	545484
Z_chinese_post	3071136
Z_chinese_pre	271831
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175498
_Fp_equal0	260711
_Fp_inv	34301
_Fp_mul	14228582
_Fp_neg	1086813
_Fp_one	47162
_Fp_pow	28603128
_Fp_rand	160
_Fp_red	889818
_Fp_rmul	575252
_Fp_s	19073
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9363144
_mul2_remii	3545838
_mul2_remiibar	1797854
_mul_montred	6664787
_mul_remii	1487760
_mul_remiibar	717268
_psi	1714
_sqr_montred	63099922
_sqr_remii	23518321
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105471
bestapprPade	119
bestapprPade0	126
bestappr_Q	2290149
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1273276
bestappr_ser	98
check_kernel	63
checkp	2574115
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460639
chinese1_coprime_Z_aux	2253539
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56798
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980302
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463054
gener_Zp	259
get_Fp_field	6961
get_PHI	98
gome	5846539
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661631
intmod2polmod	21
is_gener_Fl	1662302
is_gener_Fp	13957
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27626751
kronecker	12750785
krosi	159682
kross	100335613
kroui	35684
krouodd	195366
krouu	102553408
krouu_s	235332747
lcmii	54528293
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498567
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159075
mulu_interval_step	92806
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1512407
nmV_chinese_center	378308
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120440
nmV_polint_center_tree	378308
nmV_polint_center_tree_seq	120440
nmV_polint_center_tree_worker	973141
nonsquare1_Fl	12029104
nonsquare_Fl	7930
nonsquare_Fp	1458
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
nxCV_polint_center_tree	6584
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	1223
nxV_chinese_center	429311
nxV_chinese_center_tree	303792
nxV_polint_center_tree	875442
odd_prime_divisors	1812
ome	334320081
opt_param	63
padic2mod	21
pgener_Fl	574894
pgener_Fl_local	1080946
pgener_Fp	44282
pgener_Fp_local	412315
pgener_Zl	205549
pgener_Zp	170793
pnqn	0
polint_chinese	378412
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	1888710
tr	59731
u_chinese_coprime	1636840
u_chinese_post	1636865
u_is_gener_expo	544959
u_odd_prime_divisors	463922
u_remove2	463922
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16