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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 91.0 % 2335 2125 Test Date: 2026-08-15 17:02:54 Functions: 93.6 % 236 221 Legend: Lines:     hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	192246
Fl_2gener_pre_i	65964
Fl_2powu	5552658
Fl_2powu_pre	13265404
Fl_lgener_pre_all	147998
Fl_log	132376
Fl_log_Fp	0
Fl_log_naive	132376
Fl_log_naive_pre	29547
Fl_log_pre	29959
Fl_order	546648
Fl_powers	296057
Fl_powers_pre	13229770
Fl_powu	152052662
Fl_powu_pre	169742171
Fl_sqrt	16101174
Fl_sqrt_i	16076018
Fl_sqrt_pre	25314503
Fl_sqrt_pre_i	41603782
Fl_sqrtl	0
Fl_sqrtl_pre	231826
Fl_sqrtl_raw	234783
Fl_sqrtn	233471
Fl_sqrtn_pre	233471
FpV_prod	504
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819103
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6128937
Fp_invmBarrett	14033
Fp_log	4259506
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56628
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30261
Fp_log_use_index	5039635
Fp_order	136429
Fp_pow	38998277
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346238
Fp_powu	1901393
Fp_rem_mBarrett	8295405
Fp_rootsof1	820
Fp_select_red	903809
Fp_sqrt	6150189
Fp_sqrt_i	6203883
Fp_sqrt_ii	75211
Fp_sqrtn	173539
Fp_sqrts	18957
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215569
ZM_nv_mod_tree_t	221023
ZT_sqr	13758209
ZVV_nv_mod_tree	5454
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	150494
ZV_chinese_tree	42248619
ZV_chinesetree	2628203
ZV_invdivexact	2628203
ZV_nv_mod_tree	1247037
ZV_producttree	2632058
ZV_sqr	2628203
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254715
ZX_nv_mod_tree	3078712
Z_ZV_mod	0
Z_ZV_mod_tree	58717726
Z_chinese	2142
Z_chinese_all	448279
Z_chinese_coprime	547539
Z_chinese_post	3253339
Z_chinese_pre	451996
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14231586
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28601274
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9382549
_mul2_remii	3696712
_mul2_remiibar	1797278
_mul_montred	6705708
_mul_remii	1505189
_mul_remiibar	717266
_psi	1714
_sqr_montred	63552379
_sqr_remii	24529271
_sqr_remiibar	7578139
addifsmooth1	2163
addifsmooth2	83825
bestappr	286831
bestapprPade	119
bestapprPade0	126
bestappr_Q	2440242
bestappr_RgX	119
bestappr_frac	1304368
bestappr_real	1684721
bestappr_ser	98
check_kernel	63
checkp	3385587
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460336
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	84
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57255
factorial_Fp	186
fibo	7
gboundcf	3142426
gc_chinese	972800
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2462751
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5975469
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	694621
intmod2polmod	21
is_gener_Fl	1662766
is_gener_Fp	13734
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	37769593
kronecker	12966901
krosi	159773
kross	100889843
kroui	35451
krouodd	195224
krouu	107036005
krouu_s	250671353
lcmii	55320278
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	501083
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	166976
mulu_interval_step	92879
ncV_chinese_center	10354
ncV_chinese_center_tree	5454
ncV_polint_center_tree	1539312
nmV_chinese_center	378084
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120758
nmV_polint_center_tree	378084
nmV_polint_center_tree_seq	120758
nmV_polint_center_tree_worker	987782
nonsquare1_Fl	14572231
nonsquare_Fl	7935
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	428623
nxV_chinese_center_tree	304116
nxV_polint_center_tree	875344
odd_prime_divisors	1812
ome	361559889
opt_param	63
padic2mod	21
pgener_Fl	575299
pgener_Fl_local	1081451
pgener_Fp	44282
pgener_Fp_local	412365
pgener_Zl	205857
pgener_Zp	171101
pnqn	0
polint_chinese	378188
quad_isreduced	21
quadsfcont	14
quadsfcontbound	7
remove2	1812
rootsof1_Fl	215577
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	1890895
tr	59731
u_chinese_coprime	1656044
u_chinese_post	1656044
u_is_gener_expo	545055
u_odd_prime_divisors	464062
u_remove2	464062
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 2.0-1