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 30831-19b50a36d0) Lines: 2080 2301 90.4 % Date: 2026-04-23 09:26:12 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188799
Fl_2gener_pre_i	65848
Fl_2powu	4989632
Fl_2powu_pre	12889726
Fl_lgener_pre_all	147116
Fl_log	132362
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29082
Fl_log_pre	29480
Fl_order	546590
Fl_powers	296050
Fl_powers_pre	13036984
Fl_powu	144548271
Fl_powu_pre	165365680
Fl_sqrt	14772677
Fl_sqrt_i	14894311
Fl_sqrt_pre	23334880
Fl_sqrt_pre_i	38297305
Fl_sqrtl	0
Fl_sqrtl_pre	229986
Fl_sqrtl_raw	232947
Fl_sqrtn	233411
Fl_sqrtn_pre	233411
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819508
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6097465
Fp_invmBarrett	14032
Fp_log	4259595
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	55922
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30252
Fp_log_use_index	5039815
Fp_order	136406
Fp_pow	37753211
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346271
Fp_powu	1903817
Fp_rem_mBarrett	8294973
Fp_rootsof1	820
Fp_select_red	904333
Fp_sqrt	4844473
Fp_sqrt_i	4898154
Fp_sqrt_ii	75186
Fp_sqrtn	173541
Fp_sqrts	18953
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215663
ZM_nv_mod_tree_t	221119
ZT_sqr	13363402
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	144735
ZV_chinese_tree	40795166
ZV_chinesetree	2570475
ZV_invdivexact	2570499
ZV_nv_mod_tree	1236321
ZV_producttree	2574362
ZV_sqr	2570503
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254546
ZX_nv_mod_tree	3052873
Z_ZV_mod	0
Z_ZV_mod_tree	57834350
Z_chinese	2142
Z_chinese_all	268092
Z_chinese_coprime	546149
Z_chinese_post	3071792
Z_chinese_pre	271815
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175498
_Fp_equal0	260711
_Fp_inv	34301
_Fp_mul	14228305
_Fp_neg	1086813
_Fp_one	47162
_Fp_pow	28603418
_Fp_rand	160
_Fp_red	889818
_Fp_rmul	575252
_Fp_s	19073
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9371691
_mul2_remii	3530890
_mul2_remiibar	1797049
_mul_montred	6702824
_mul_remii	1485212
_mul_remiibar	717266
_psi	1714
_sqr_montred	63203200
_sqr_remii	23444907
_sqr_remiibar	7577707
addifsmooth1	2163
addifsmooth2	83825
bestappr	106360
bestapprPade	119
bestapprPade0	126
bestappr_Q	2284375
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1263083
bestappr_ser	98
check_kernel	63
checkp	2686811
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460680
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57095
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	968124
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463095
gener_Zp	259
get_Fp_field	6961
get_PHI	98
gome	5922156
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	695270
intmod2polmod	21
is_gener_Fl	1662477
is_gener_Fp	13965
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	37727956
kronecker	12777584
krosi	159682
kross	100423614
kroui	35692
krouodd	195374
krouu	103392791
krouu_s	246337653
lcmii	55102086
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	176999
mulu_interval_step	92753
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514889
nmV_chinese_center	378501
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120578
nmV_polint_center_tree	378501
nmV_polint_center_tree_seq	120578
nmV_polint_center_tree_worker	974556
nonsquare1_Fl	13097773
nonsquare_Fl	7942
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	429311
nxV_chinese_center_tree	303885
nxV_polint_center_tree	875542
odd_prime_divisors	1812
ome	347954437
opt_param	63
padic2mod	21
pgener_Fl	575203
pgener_Fl_local	1081266
pgener_Fp	44282
pgener_Fp_local	412303
pgener_Zl	205829
pgener_Zp	171073
pnqn	0
polint_chinese	378605
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	1889687
tr	59731
u_chinese_coprime	1640084
u_chinese_post	1640072
u_is_gener_expo	544992
u_odd_prime_divisors	463950
u_remove2	463950
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16