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 30775-9d8a55740a) Lines: 2080 2301 90.4 % Date: 2026-04-05 09:26:48 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188798
Fl_2gener_pre_i	65848
Fl_2powu	4989333
Fl_2powu_pre	12897036
Fl_lgener_pre_all	147150
Fl_log	132360
Fl_log_Fp	0
Fl_log_naive	132361
Fl_log_naive_pre	29041
Fl_log_pre	29439
Fl_order	546588
Fl_powers	296050
Fl_powers_pre	13054310
Fl_powu	144858586
Fl_powu_pre	166078247
Fl_sqrt	14770142
Fl_sqrt_i	14892014
Fl_sqrt_pre	23334205
Fl_sqrt_pre_i	38294260
Fl_sqrtl	0
Fl_sqrtl_pre	229943
Fl_sqrtl_raw	232903
Fl_sqrtn	233409
Fl_sqrtn_pre	233410
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819446
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6097655
Fp_invmBarrett	14032
Fp_log	4259578
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56551
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30251
Fp_log_use_index	5039716
Fp_order	136404
Fp_pow	37753105
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346262
Fp_powu	1900590
Fp_rem_mBarrett	8294973
Fp_rootsof1	820
Fp_select_red	903589
Fp_sqrt	4844125
Fp_sqrt_i	4897814
Fp_sqrt_ii	75187
Fp_sqrtn	173541
Fp_sqrts	18950
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215670
ZM_nv_mod_tree_t	221127
ZT_sqr	13619063
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156945
ZV_chinese_tree	40836882
ZV_chinesetree	2633018
ZV_invdivexact	2633022
ZV_nv_mod_tree	1236371
ZV_producttree	2636865
ZV_sqr	2633020
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254549
ZX_nv_mod_tree	3103411
Z_ZV_mod	0
Z_ZV_mod_tree	58206408
Z_chinese	2142
Z_chinese_all	268100
Z_chinese_coprime	546218
Z_chinese_post	3071855
Z_chinese_pre	271820
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228100
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603363
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9368181
_mul2_remii	3527022
_mul2_remiibar	1797049
_mul_montred	6703136
_mul_remii	1489173
_mul_remiibar	717266
_psi	1714
_sqr_montred	63189205
_sqr_remii	23499355
_sqr_remiibar	7577707
addifsmooth1	2163
addifsmooth2	83825
bestappr	106341
bestapprPade	119
bestapprPade0	126
bestappr_Q	2289013
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1268018
bestappr_ser	98
check_kernel	63
checkp	2684325
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460704
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57063
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980201
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463119
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5922202
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	694482
intmod2polmod	21
is_gener_Fl	1662481
is_gener_Fp	13985
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	37724496
kronecker	12777641
krosi	159682
kross	100423608
kroui	35712
krouodd	195394
krouu	103387826
krouu_s	246327241
lcmii	54662082
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	500320
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159074
mulu_interval_step	92771
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514979
nmV_chinese_center	378527
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120583
nmV_polint_center_tree	378527
nmV_polint_center_tree_seq	120583
nmV_polint_center_tree_worker	974636
nonsquare1_Fl	13102929
nonsquare_Fl	7935
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	429151
nxV_chinese_center_tree	303858
nxV_polint_center_tree	875309
odd_prime_divisors	1812
ome	347922443
opt_param	63
padic2mod	21
pgener_Fl	575228
pgener_Fl_local	1081275
pgener_Fp	44282
pgener_Fp_local	412288
pgener_Zl	205829
pgener_Zp	171073
pnqn	0
polint_chinese	378631
remove2	1812
rootsof1_Fl	215523
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	1889737
tr	59731
u_chinese_coprime	1640255
u_chinese_post	1640264
u_is_gener_expo	545006
u_odd_prime_divisors	463965
u_remove2	463965
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16