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 31057-89c4d54ba6) Lines: 90.3 % 2352 2124 Test Date: 2026-07-25 17:02:42 Functions: 93.6 % 236 221 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
quadsfcontbound	7
quadsfcont	14
sfcont2	14
intmod2polmod	21
padic2mod	21
quad_isreduced	21
gc_empty	42
mod_to_frac	42
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
contfrac0	84
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	504
muls_interval	595
Fp_rootsof1	820
ECP_psi	837
_computeG	837
nxMV_polint_center_tree_worker	1225
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	5634
Fp_2gener_all	5909
Fp_powers	5931
nxCV_polint_center_tree	6585
get_Fp_field	6961
mphilbertoo	7329
nonsquare_Fl	7935
ncV_chinese_center	10357
is_gener_Fp	13710
Fp_invmBarrett	14033
Fp_sqrts	18957
_Fp_s	19073
Fp_2gener_i	19392
Fl_log_naive_pre	29581
Fl_log_pre	29993
Fp_log_sieve_worker	30261
_Fp_inv	34301
kroui	35427
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56433
factorial_Fl	57255
tr	59731
hilbert	62314
Fl_2gener_pre_i	65964
istotient	70000
Fp_sqrt_ii	75211
addifsmooth2	83825
mulu_interval_step	92879
nmV_chinese_center_tree_seq	120507
nmV_polint_center_tree_seq	120507
Fl_log	132376
Fl_log_naive	132376
Fp_order	136429
hilbertii	140826
Fl_lgener_pre_all	148052
ZV_chinese_center	150489
krosi	159773
mulu_interval	166976
rt	169813
pgener_Zp	171101
Fp_sqrtn	173539
Fl_2gener_pre	192246
krouodd	195200
pgener_Zl	205857
ZM_nv_mod_tree	215064
rootsof1_Fl	215575
ZM_nv_mod_tree_t	220521
Fl_sqrtl_pre	231988
Fl_sqrtn	233469
Fl_sqrtn_pre	233469
Fl_sqrtl_raw	234945
ZXX_nv_mod_tree	254715
_Fp_equal0	260711
bestappr	286795
Fl_powers	296057
nxV_chinese_center_tree	304110
Z_factor_listP	350651
nmV_chinese_center	377461
nmV_polint_center_tree	377461
polint_chinese	377565
pgener_Fp_local	412365
nxV_chinese_center	428630
Z_chinese_all	448279
Z_chinese_pre	451996
u_odd_prime_divisors	464049
u_remove2	464049
mpfact	501083
u_is_gener_expo	545044
Z_chinese_coprime	546317
Fl_order	546648
_Fp_rmul	575252
pgener_Fl	575280
istotient_i	621565
init_montdata	694595
_mul_remiibar	717266
nxV_polint_center_tree	875345
_Fp_red	889818
ZV_allpnqn	894831
Fp_select_red	903770
gc_chinese	972182
nmV_polint_center_tree_worker	987255
pgener_Fl_local	1081430
_Fp_neg	1086813
_Fp_add	1175498
ZV_nv_mod_tree	1246262
Fp_pows	1346238
bestappr_real	1431353
_mul_remii	1505161
ncV_polint_center_tree	1538561
u_chinese_coprime	1644520
u_chinese_post	1644520
is_gener_Fl	1662743
_mul2_remiibar	1797278
to_ZX	1890904
Fp_powu	1901386
chinese1_coprime_Z_aux	2253538
bestappr_Q	2448914
chinese1_coprime_Z	2460347
gen_chinese	2462762
ZV_chinesetree	2627327
ZV_invdivexact	2627327
ZV_sqr	2627327
ZV_producttree	2631182
ZX_nv_mod_tree	3078698
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142426
Z_chinese_post	3252117
checkp	3350346
_mul2_remii	3701061
Fp_log	4259497
Fp_log_use_index	5039617
Fl_2powu	5551841
gome	5975462
Fp_sqrt	6087200
Fp_invgen	6110151
Fp_sqrt_i	6140894
_mul_montred	6705575
_sqr_remiibar	7578139
_Fp_sqr	8134253
Fp_rem_mBarrett	8295405
Fp_easylog	8819108
_mul2_montred	9373605
kronecker	12966881
Fl_powers_pre	13222046
Fl_2powu_pre	13230358
ZT_sqr	13755070
_Fp_mul	14231640
nonsquare1_Fl	14503870
Fl_sqrt	16038452
Fl_sqrt_i	16076217
_sqr_remii	24541490
Fl_sqrt_pre	25310278
_Fp_pow	28601168
kroiu	37769593
Fp_pow	38935091
Fl_sqrt_pre_i	41536833
ZV_chinese_tree	42247790
lcmii	55324822
Z_ZV_mod_tree	58715269
_sqr_montred	63538061
kross	100889857
krouu	106979223
Fl_powu	151989772
Fl_powu_pre	169544006
krouu_s	250614553
ome	361464353

Generated by: LCOV version 2.0-1