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 30552-d1d0643eee) Lines: 2080 2301 90.4 % Date: 2025-11-21 09:22:16 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	193781
Fl_2gener_pre_i	65765
Fl_2powu	4359134
Fl_2powu_pre	12936044
Fl_lgener_pre_all	148528
Fl_log	132387
Fl_log_Fp	0
Fl_log_naive	132387
Fl_log_naive_pre	29140
Fl_log_pre	29538
Fl_order	546584
Fl_powers	296057
Fl_powers_pre	13093138
Fl_powu	141643270
Fl_powu_pre	165579918
Fl_sqrt	12488319
Fl_sqrt_i	12609865
Fl_sqrt_pre	22639600
Fl_sqrt_pre_i	35319455
Fl_sqrtl	0
Fl_sqrtl_pre	233576
Fl_sqrtl_raw	236537
Fl_sqrtn	233413
Fl_sqrtn_pre	233413
FpV_prod	497
Fp_2gener	3327
Fp_2gener_all	5916
Fp_2gener_i	19392
Fp_easylog	8819110
Fp_factored_order	70
Fp_gausssum	363
Fp_invgen	6089571
Fp_invmBarrett	15404
Fp_log	4259284
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	55979
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30258
Fp_log_use_index	5039435
Fp_order	136619
Fp_pow	37758785
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346198
Fp_powu	1755454
Fp_rem_mBarrett	9736166
Fp_rootsof1	846
Fp_select_red	880226
Fp_sqrt	4844613
Fp_sqrt_i	4903068
Fp_sqrt_ii	80251
Fp_sqrtn	173548
Fp_sqrts	18504
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215085
ZM_nv_mod_tree_t	220543
ZT_sqr	13621072
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	157293
ZV_chinese_tree	40793166
ZV_chinesetree	2631864
ZV_invdivexact	2631860
ZV_nv_mod_tree	1234682
ZV_producttree	2636527
ZV_sqr	2631858
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254893
ZX_nv_mod_tree	3106668
Z_ZV_mod	0
Z_ZV_mod_tree	58144420
Z_chinese	2142
Z_chinese_all	268129
Z_chinese_coprime	544239
Z_chinese_post	3069888
Z_chinese_pre	271848
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228438
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28602566
_Fp_rand	167
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	10514650
_mul2_remii	4313602
_mul2_remiibar	2115908
_mul_montred	7093121
_mul_remii	1825727
_mul_remiibar	842605
_psi	1714
_sqr_montred	67653978
_sqr_remii	26666207
_sqr_remiibar	8893561
addifsmooth1	2163
addifsmooth2	83825
bestappr	105445
bestapprPade	119
bestapprPade0	126
bestappr_Q	2284373
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1269918
bestappr_ser	98
check_kernel	63
checkp	2581000
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460566
chinese1_coprime_Z_aux	2253539
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56793
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980558
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2462981
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5891517
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	667300
intmod2polmod	21
is_gener_Fl	1662253
is_gener_Fp	13983
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27627606
kronecker	12751310
krosi	159682
kross	101947421
kroui	35345
krouodd	195027
krouu	101491333
krouu_s	235876546
lcmii	54532660
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498598
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159079
mulu_interval_step	92767
ncV_chinese_center	10565
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1515108
nmV_chinese_center	378058
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120350
nmV_polint_center_tree	378058
nmV_polint_center_tree_seq	120349
nmV_polint_center_tree_worker	974955
nonsquare1_Fl	12181690
nonsquare_Fl	7930
nonsquare_Fp	1460
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	429396
nxV_chinese_center_tree	304264
nxV_polint_center_tree	876077
odd_prime_divisors	1812
ome	330865089
opt_param	63
padic2mod	21
pgener_Fl	574913
pgener_Fl_local	1080981
pgener_Fp	44282
pgener_Fp_local	412295
pgener_Zl	205542
pgener_Zp	170786
pnqn	0
polint_chinese	378162
remove2	1812
rootsof1_Fl	215545
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	1893874
tr	59731
u_chinese_coprime	1636632
u_chinese_post	1636638
u_is_gener_expo	544959
u_odd_prime_divisors	463954
u_remove2	463954
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16