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

Generated by: LCOV version 1.16