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 30622-caa25a75db) Lines: 2080 2301 90.4 % Date: 2026-01-22 09:18:00 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
Fl_log_Fp	0
Fl_sqrtl	0
ZMV_producttree	0
Z_ZV_mod	0
Z_nv_mod	0
gcf2	0
nmV_chinese_center_tree	0
nxCV_chinese_center	0
nxCV_chinese_center_tree	0
pnqn	0
rootsof1_Fp	0
sersfcont	0
sqrt_Cipolla	0
sqrt_Cipolla_msqr	0
sqrt_Cipolla_sqr	0
bestappr_frac	7
fibo	7
sfcont2	14
intmod2polmod	21
padic2mod	21
gc_empty	42
mod_to_frac	42
contfrac0	49
serPade	49
err_oo	56
lucas	56
Fp_log_index	63
Fp_log_sieve	63
check_kernel	63
compute_nbgen	63
opt_param	63
znorder	63
Fp_factored_order	70
Zp_order	70
bestappr_ser	98
get_PHI	98
nxMV_chinese_center	104
nxMV_polint_center_tree	104
Fp_pow_init	105
mpprimorial	105
_gc_upto	112
mod_to_rfrac	112
bestapprPade	119
bestappr_RgX	119
Fp_log_find_ind	126
Fp_log_find_rel	126
bestapprPade0	126
gcf	126
znlog_rec	126
_Fp_rand	160
err_p	161
factorial_Fp	186
err_prec	196
lift_padic	210
znlog	238
gener_Zp	259
contfracpnqn	266
znprimroot	329
Fp_gausssum	351
lift_intmod	420
ZXM_nv_mod_tree	491
nxMV_chinese_center_tree_seq	491
nxMV_polint_center_tree_seq	491
FpV_prod	497
muls_interval	595
Fp_rootsof1	820
ECP_psi	837
_computeG	837
nxMV_polint_center_tree_worker	1224
nonsquare_Fp	1458
_psi	1714
odd_prime_divisors	1812
remove2	1812
Z_chinese	2142
addifsmooth1	2163
chinese1	2415
rootsof1u_Fp	3033
Fp_2gener	3222
is_gener_expo	4909
ZV_chinese	5141
ZVV_nv_mod_tree	5457
ncV_chinese_center_tree	5457
chinese	5495
ZXC_nv_mod_tree	5631
Fp_2gener_all	5909
Fp_powers	5931
nxCV_polint_center_tree	6584
get_Fp_field	6963
mphilbertoo	7329
nonsquare_Fl	7926
ncV_chinese_center	10333
is_gener_Fp	13438
Fp_invmBarrett	14036
Fp_sqrts	18948
_Fp_s	19075
Fp_2gener_i	19392
Fl_log_naive_pre	29033
Fl_log_pre	29404
Fp_log_sieve_worker	30256
_Fp_inv	34307
kroui	35164
krois	40089
Fp_pow_table	43694
pgener_Fp	44278
_Fp_one	47162
factorial_Fl	51568
Fp_log_halfgcd	56851
tr	59731
hilbert	62314
Fl_2gener_pre_i	65849
istotient	70000
Fp_sqrt_ii	75147
addifsmooth2	83825
mulu_interval_step	92734
bestappr	98969
nmV_chinese_center_tree_seq	119739
nmV_polint_center_tree_seq	119741
Fl_log	123696
Fl_log_naive	123696
Fp_order	128970
hilbertii	140826
Fl_lgener_pre_all	146957
ZV_chinese_center	155455
mulu_interval	158957
krosi	159682
rt	169813
pgener_Zp	170674
Fp_sqrtn	173541
Fl_2gener_pre	188825
krouodd	194846
pgener_Zl	205430
rootsof1_Fl	212201
ZM_nv_mod_tree	214807
ZM_nv_mod_tree_t	220264
Fl_sqrtn	226584
Fl_sqrtn_pre	226584
Fl_sqrtl_pre	230037
Fl_sqrtl_raw	232820
ZXX_nv_mod_tree	253752
_Fp_equal0	260724
Z_chinese_all	268108
Z_chinese_pre	271831
Fl_powers	295546
nxV_chinese_center_tree	303045
Z_factor_listP	350651
pgener_Fp_local	370734
nmV_chinese_center	374214
nmV_polint_center_tree	374214
polint_chinese	374318
nxV_chinese_center	420661
u_odd_prime_divisors	460564
u_remove2	460564
mpfact	498331
u_is_gener_expo	531511
Z_chinese_coprime	538983
Fl_order	539103
pgener_Fl	574466
_Fp_rmul	575346
istotient_i	621565
init_montdata	660501
_mul_remiibar	717268
nxV_polint_center_tree	865870
Fp_select_red	869723
_Fp_red	889913
ZV_allpnqn	894831
nmV_polint_center_tree_worker	958454
gc_chinese	965908
pgener_Fl_local	1046717
_Fp_neg	1086846
_Fp_add	1175565
bestappr_real	1198161
ZV_nv_mod_tree	1228360
Fp_pows	1345843
_mul_remii	1446432
ncV_polint_center_tree	1491598
u_chinese_coprime	1543775
u_chinese_post	1543776
is_gener_Fl	1633747
Fp_powu	1744043
_mul2_remiibar	1797854
to_ZX	1874189
bestappr_Q	2132343
chinese1_coprime_Z_aux	2253534
chinese1_coprime_Z	2456871
gen_chinese	2459286
checkp	2569043
ZV_chinesetree	2607527
ZV_invdivexact	2607559
ZV_sqr	2607581
ZV_producttree	2611514
Z_chinese_post	3064623
ZX_nv_mod_tree	3075949
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3498955
Fp_log	4206294
Fl_2powu	4332558
Fp_sqrt	4844256
Fp_sqrt_i	4897930
Fp_log_use_index	4985393
gome	5835045
Fp_invgen	5842939
_mul_montred	6655500
_sqr_remiibar	7579293
_Fp_sqr	8134253
Fp_rem_mBarrett	8296561
Fp_easylog	8792937
_mul2_montred	9339668
nonsquare1_Fl	12007183
Fl_sqrt	12405223
Fl_sqrt_i	12522303
kronecker	12743760
Fl_2powu_pre	12841885
Fl_powers_pre	13032096
ZT_sqr	13518666
_Fp_mul	14224459
_sqr_remii	23167675
Fl_sqrt_pre	23270176
kroiu	27587320
_Fp_pow	28581075
Fl_sqrt_pre_i	35862808
Fp_pow	37559577
ZV_chinese_tree	40344406
lcmii	53961318
Z_ZV_mod_tree	57856930
_sqr_montred	62809137
kross	100335608
krouu	102243613
Fl_powu	139537116
Fl_powu_pre	164173728
krouu_s	234975785
ome	333934715

Generated by: LCOV version 1.16