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 30674-be81ecfdd4) Lines: 2080 2301 90.4 % Date: 2026-02-11 09:23:10 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188811
Fl_2gener_pre_i	65849
Fl_2powu	4358387
Fl_2powu_pre	12898267
Fl_lgener_pre_all	147075
Fl_log	132361
Fl_log_Fp	0
Fl_log_naive	132361
Fl_log_naive_pre	29052
Fl_log_pre	29450
Fl_order	546540
Fl_powers	296050
Fl_powers_pre	13059270
Fl_powu	141483723
Fl_powu_pre	166197744
Fl_sqrt	12404518
Fl_sqrt_i	12525830
Fl_sqrt_pre	23372869
Fl_sqrt_pre_i	35972250
Fl_sqrtl	0
Fl_sqrtl_pre	229997
Fl_sqrtl_raw	232957
Fl_sqrtn	233411
Fl_sqrtn_pre	233411
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819430
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6096456
Fp_invmBarrett	14036
Fp_log	4259574
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56682
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30259
Fp_log_use_index	5039784
Fp_order	136406
Fp_pow	37753400
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346191
Fp_powu	1754374
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869463
Fp_sqrt	4844563
Fp_sqrt_i	4898238
Fp_sqrt_ii	75167
Fp_sqrtn	173541
Fp_sqrts	18946
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215641
ZM_nv_mod_tree_t	221098
ZT_sqr	13609588
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156864
ZV_chinese_tree	40878318
ZV_chinesetree	2630250
ZV_invdivexact	2630231
ZV_nv_mod_tree	1236126
ZV_producttree	2634107
ZV_sqr	2630249
ZXC_nv_mod_tree	5633
ZXM_nv_mod_tree	490
ZXX_nv_mod_tree	254444
ZX_nv_mod_tree	3097916
Z_ZV_mod	0
Z_ZV_mod_tree	58180926
Z_chinese	2142
Z_chinese_all	268126
Z_chinese_coprime	547157
Z_chinese_post	3072818
Z_chinese_pre	271848
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175498
_Fp_equal0	260711
_Fp_inv	34301
_Fp_mul	14228562
_Fp_neg	1086813
_Fp_one	47162
_Fp_pow	28603273
_Fp_rand	160
_Fp_red	889818
_Fp_rmul	575252
_Fp_s	19073
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9358632
_mul2_remii	3555963
_mul2_remiibar	1797854
_mul_montred	6662127
_mul_remii	1473206
_mul_remiibar	717268
_psi	1714
_sqr_montred	63015963
_sqr_remii	23452292
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105644
bestapprPade	119
bestapprPade0	126
bestappr_Q	2294256
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1274022
bestappr_ser	98
check_kernel	63
checkp	2577644
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460667
chinese1_coprime_Z_aux	2253538
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	980333
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463082
gener_Zp	259
get_Fp_field	6961
get_PHI	98
gome	5846469
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661588
intmod2polmod	21
is_gener_Fl	1662294
is_gener_Fp	13973
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27624745
kronecker	12751289
krosi	159682
kross	100423545
kroui	35698
krouodd	195378
krouu	102604563
krouu_s	235470025
lcmii	54534970
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	159074
mulu_interval_step	92859
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514887
nmV_chinese_center	378577
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120563
nmV_polint_center_tree	378577
nmV_polint_center_tree_seq	120563
nmV_polint_center_tree_worker	974619
nonsquare1_Fl	12036832
nonsquare_Fl	7930
nonsquare_Fp	1457
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	429313
nxV_chinese_center_tree	303777
nxV_polint_center_tree	875447
odd_prime_divisors	1812
ome	334597608
opt_param	63
padic2mod	21
pgener_Fl	575128
pgener_Fl_local	1081197
pgener_Fp	44282
pgener_Fp_local	412323
pgener_Zl	205801
pgener_Zp	171045
pnqn	0
polint_chinese	378681
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	1887403
tr	59731
u_chinese_coprime	1638760
u_chinese_post	1638941
u_is_gener_expo	544957
u_odd_prime_divisors	463913
u_remove2	463912
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16