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 30754-316d984fc8) Lines: 2080 2301 90.4 % Date: 2026-03-19 09:26:57 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188816
Fl_2gener_pre_i	65848
Fl_2powu	4989650
Fl_2powu_pre	12894942
Fl_lgener_pre_all	147032
Fl_log	132361
Fl_log_Fp	0
Fl_log_naive	132361
Fl_log_naive_pre	28928
Fl_log_pre	29326
Fl_order	546575
Fl_powers	296050
Fl_powers_pre	13039563
Fl_powu	144810182
Fl_powu_pre	166195771
Fl_sqrt	14772834
Fl_sqrt_i	14894616
Fl_sqrt_pre	23365972
Fl_sqrt_pre_i	38332356
Fl_sqrtl	0
Fl_sqrtl_pre	229976
Fl_sqrtl_raw	232936
Fl_sqrtn	233408
Fl_sqrtn_pre	233408
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819489
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6097972
Fp_invmBarrett	14032
Fp_log	4259602
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56581
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30258
Fp_log_use_index	5039824
Fp_order	136405
Fp_pow	37753884
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346254
Fp_powu	1900600
Fp_rem_mBarrett	8294973
Fp_rootsof1	820
Fp_select_red	903470
Fp_sqrt	4844864
Fp_sqrt_i	4898520
Fp_sqrt_ii	75164
Fp_sqrtn	173541
Fp_sqrts	18948
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215657
ZM_nv_mod_tree_t	221114
ZT_sqr	13618535
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156948
ZV_chinese_tree	40907105
ZV_chinesetree	2632975
ZV_invdivexact	2632975
ZV_nv_mod_tree	1236239
ZV_producttree	2636854
ZV_sqr	2632984
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254533
ZX_nv_mod_tree	3102227
Z_ZV_mod	0
Z_ZV_mod_tree	58207103
Z_chinese	2142
Z_chinese_all	268120
Z_chinese_coprime	545957
Z_chinese_post	3071611
Z_chinese_pre	271838
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228181
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603395
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9352441
_mul2_remii	3566389
_mul2_remiibar	1797049
_mul_montred	6699738
_mul_remii	1476118
_mul_remiibar	717266
_psi	1714
_sqr_montred	63100825
_sqr_remii	23550007
_sqr_remiibar	7577707
addifsmooth1	2163
addifsmooth2	83825
bestappr	106323
bestapprPade	119
bestapprPade0	126
bestappr_Q	2282298
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1261934
bestappr_ser	98
check_kernel	63
checkp	2684548
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460712
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57091
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980177
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463128
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5922028
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	694435
intmod2polmod	21
is_gener_Fl	1662356
is_gener_Fp	13967
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	37728057
kronecker	12777719
krosi	159682
kross	100423583
kroui	35694
krouodd	195376
krouu	103437967
krouu_s	246383338
lcmii	54658020
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	500311
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159077
mulu_interval_step	92773
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514883
nmV_chinese_center	378499
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120574
nmV_polint_center_tree	378499
nmV_polint_center_tree_seq	120577
nmV_polint_center_tree_worker	974557
nonsquare1_Fl	13100983
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	429152
nxV_chinese_center_tree	303848
nxV_polint_center_tree	875401
odd_prime_divisors	1812
ome	348190063
opt_param	63
padic2mod	21
pgener_Fl	575187
pgener_Fl_local	1081236
pgener_Fp	44282
pgener_Fp_local	412301
pgener_Zl	205822
pgener_Zp	171066
pnqn	0
polint_chinese	378603
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	1888648
tr	59731
u_chinese_coprime	1640384
u_chinese_post	1640404
u_is_gener_expo	544992
u_odd_prime_divisors	463949
u_remove2	463949
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16