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: 2026-02-07 09:23:42 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	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	6959
mphilbertoo	7329
nonsquare_Fl	7930
ncV_chinese_center	10333
is_gener_Fp	13971
Fp_invmBarrett	14036
Fp_sqrts	18949
_Fp_s	19071
Fp_2gener_i	19392
Fl_log_naive_pre	29086
Fl_log_pre	29484
Fp_log_sieve_worker	30250
_Fp_inv	34295
kroui	35698
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	56719
factorial_Fl	56773
tr	59731
hilbert	62314
Fl_2gener_pre_i	65849
istotient	70000
Fp_sqrt_ii	75183
addifsmooth2	83825
mulu_interval_step	92789
bestappr	105630
nmV_polint_center_tree_seq	120552
nmV_chinese_center_tree_seq	120554
Fl_log	132361
Fl_log_naive	132361
Fp_order	136408
hilbertii	140826
Fl_lgener_pre_all	147060
ZV_chinese_center	156866
mulu_interval	159076
krosi	159682
rt	169813
pgener_Zp	171045
Fp_sqrtn	173541
Fl_2gener_pre	188788
krouodd	195380
pgener_Zl	205801
rootsof1_Fl	215521
ZM_nv_mod_tree	215618
ZM_nv_mod_tree_t	221075
Fl_sqrtl_pre	229974
Fl_sqrtl_raw	232933
Fl_sqrtn	233407
Fl_sqrtn_pre	233407
ZXX_nv_mod_tree	254477
_Fp_equal0	260698
Z_chinese_all	268097
Z_chinese_pre	271820
Fl_powers	296050
nxV_chinese_center_tree	303801
Z_factor_listP	350651
nmV_chinese_center	378558
nmV_polint_center_tree	378558
polint_chinese	378662
pgener_Fp_local	412310
nxV_chinese_center	429312
u_odd_prime_divisors	463914
u_remove2	463914
mpfact	498568
u_is_gener_expo	544958
Fl_order	546541
Z_chinese_coprime	547079
pgener_Fl	575133
_Fp_rmul	575158
istotient_i	621565
init_montdata	661621
_mul_remiibar	717268
Fp_select_red	869565
nxV_polint_center_tree	875598
_Fp_red	889723
ZV_allpnqn	894831
nmV_polint_center_tree_worker	974546
gc_chinese	980314
pgener_Fl_local	1081199
_Fp_neg	1086780
_Fp_add	1175431
ZV_nv_mod_tree	1236123
bestappr_real	1267517
Fp_pows	1346202
_mul_remii	1485434
ncV_polint_center_tree	1514811
u_chinese_post	1638729
u_chinese_coprime	1638731
is_gener_Fl	1662289
Fp_powu	1754381
_mul2_remiibar	1797854
to_ZX	1889391
chinese1_coprime_Z_aux	2253538
bestappr_Q	2286541
chinese1_coprime_Z	2460672
gen_chinese	2463087
checkp	2589460
ZV_invdivexact	2630235
ZV_chinesetree	2630236
ZV_sqr	2630240
ZV_producttree	2634064
Z_chinese_post	3072708
ZX_nv_mod_tree	3100198
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3529259
Fp_log	4259568
Fl_2powu	4359258
Fp_sqrt	4844675
Fp_sqrt_i	4898360
Fp_log_use_index	5039785
gome	5846456
Fp_invgen	6095705
_mul_montred	6664272
_sqr_remiibar	7579293
_Fp_sqr	8134253
Fp_rem_mBarrett	8296561
Fp_easylog	8819414
_mul2_montred	9361456
nonsquare1_Fl	12039503
Fl_sqrt	12404628
Fl_sqrt_i	12526302
kronecker	12751334
Fl_2powu_pre	12890897
Fl_powers_pre	13048224
ZT_sqr	13609954
_Fp_mul	14228490
Fl_sqrt_pre	23363580
_sqr_remii	23422334
kroiu	27624400
_Fp_pow	28603404
Fl_sqrt_pre_i	35963009
Fp_pow	37753492
ZV_chinese_tree	40898072
lcmii	54529376
Z_ZV_mod_tree	58187778
_sqr_montred	63043550
kross	100423546
krouu	102587358
Fl_powu	141512333
Fl_powu_pre	166287836
krouu_s	235448809
ome	334555095

Generated by: LCOV version 1.16