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 30672-116f3d5b0e) Lines: 2080 2301 90.4 % Date: 2026-02-06 09:23:51 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188797
Fl_2gener_pre_i	65849
Fl_2powu	4358574
Fl_2powu_pre	12900434
Fl_lgener_pre_all	147074
Fl_log	132362
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29002
Fl_log_pre	29400
Fl_order	546541
Fl_powers	296050
Fl_powers_pre	13061461
Fl_powu	141590929
Fl_powu_pre	166378034
Fl_sqrt	12405412
Fl_sqrt_i	12527070
Fl_sqrt_pre	23376937
Fl_sqrt_pre_i	35976242
Fl_sqrtl	0
Fl_sqrtl_pre	229972
Fl_sqrtl_raw	232934
Fl_sqrtn	233410
Fl_sqrtn_pre	233410
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819383
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6095640
Fp_invmBarrett	14036
Fp_log	4259564
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56391
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30256
Fp_log_use_index	5039764
Fp_order	136408
Fp_pow	37753368
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346197
Fp_powu	1754391
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869545
Fp_sqrt	4844802
Fp_sqrt_i	4898481
Fp_sqrt_ii	75179
Fp_sqrtn	173541
Fp_sqrts	18952
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215639
ZM_nv_mod_tree_t	221096
ZT_sqr	13610227
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	156866
ZV_chinese_tree	40896883
ZV_chinesetree	2630263
ZV_invdivexact	2630258
ZV_nv_mod_tree	1236223
ZV_producttree	2634098
ZV_sqr	2630264
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254473
ZX_nv_mod_tree	3100195
Z_ZV_mod	0
Z_ZV_mod_tree	58205491
Z_chinese	2142
Z_chinese_all	268121
Z_chinese_coprime	546881
Z_chinese_post	3072526
Z_chinese_pre	271842
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228531
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603301
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9362637
_mul2_remii	3525713
_mul2_remiibar	1797854
_mul_montred	6664540
_mul_remii	1484755
_mul_remiibar	717268
_psi	1714
_sqr_montred	63069205
_sqr_remii	23348810
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105630
bestapprPade	119
bestapprPade0	126
bestappr_Q	2286284
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1267659
bestappr_ser	98
check_kernel	63
checkp	2574844
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460655
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56790
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980320
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463070
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5846421
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661626
intmod2polmod	21
is_gener_Fl	1662343
is_gener_Fp	13965
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27624302
kronecker	12751236
krosi	159682
kross	100423541
kroui	35692
krouodd	195374
krouu	102601461
krouu_s	235471021
lcmii	54529727
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498566
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159080
mulu_interval_step	92706
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1514824
nmV_chinese_center	378566
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120561
nmV_polint_center_tree	378566
nmV_polint_center_tree_seq	120560
nmV_polint_center_tree_worker	974554
nonsquare1_Fl	12037377
nonsquare_Fl	7930
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	429311
nxV_chinese_center_tree	303802
nxV_polint_center_tree	875591
odd_prime_divisors	1812
ome	334631741
opt_param	63
padic2mod	21
pgener_Fl	575162
pgener_Fl_local	1081236
pgener_Fp	44282
pgener_Fp_local	412321
pgener_Zl	205801
pgener_Zp	171045
pnqn	0
polint_chinese	378670
remove2	1812
rootsof1_Fl	215522
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	1889395
tr	59731
u_chinese_coprime	1638951
u_chinese_post	1638978
u_is_gener_expo	544978
u_odd_prime_divisors	463932
u_remove2	463932
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16