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 30631-5f55634266) Lines: 2080 2301 90.4 % Date: 2026-01-24 09:23:06 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188790
Fl_2gener_pre_i	65849
Fl_2powu	4359968
Fl_2powu_pre	12896166
Fl_lgener_pre_all	147097
Fl_log	132361
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29050
Fl_log_pre	29448
Fl_order	546539
Fl_powers	297219
Fl_powers_pre	13048248
Fl_powu	141495877
Fl_powu_pre	166206253
Fl_sqrt	12406342
Fl_sqrt_i	12527999
Fl_sqrt_pre	23350337
Fl_sqrt_pre_i	35947364
Fl_sqrtl	0
Fl_sqrtl_pre	229985
Fl_sqrtl_raw	232943
Fl_sqrtn	233407
Fl_sqrtn_pre	233407
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819449
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6096488
Fp_invmBarrett	14036
Fp_log	4259591
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	55922
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30250
Fp_log_use_index	5039798
Fp_order	136407
Fp_pow	37752949
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346201
Fp_powu	1754393
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869503
Fp_sqrt	4844610
Fp_sqrt_i	4898280
Fp_sqrt_ii	75147
Fp_sqrtn	173541
Fp_sqrts	18946
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215607
ZM_nv_mod_tree_t	221064
ZT_sqr	13611922
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	157111
ZV_chinese_tree	40723511
ZV_chinesetree	2631069
ZV_invdivexact	2631074
ZV_nv_mod_tree	1235055
ZV_producttree	2634997
ZV_sqr	2631100
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254424
ZX_nv_mod_tree	3098027
Z_ZV_mod	0
Z_ZV_mod_tree	58113227
Z_chinese	2142
Z_chinese_all	268100
Z_chinese_coprime	547374
Z_chinese_post	3073018
Z_chinese_pre	271821
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228678
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603339
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9356355
_mul2_remii	3523458
_mul2_remiibar	1797854
_mul_montred	6661235
_mul_remii	1465523
_mul_remiibar	717268
_psi	1714
_sqr_montred	62941649
_sqr_remii	23294965
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105650
bestapprPade	119
bestapprPade0	126
bestappr_Q	2297152
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1275936
bestappr_ser	98
check_kernel	63
checkp	2574724
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460670
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	57964
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980538
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463085
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5846302
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661605
intmod2polmod	21
is_gener_Fl	1662316
is_gener_Fp	13956
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27625458
kronecker	12750922
krosi	159682
kross	100335617
kroui	35683
krouodd	195365
krouu	102553619
krouu_s	235342591
lcmii	54526498
lift_intmod	420
lift_padic	210
lucas	56
mod_to_frac	42
mod_to_rfrac	112
mpfact	498568
mphilbertoo	7329
mpprimorial	105
muls_interval	595
mulu_interval	159074
mulu_interval_step	92800
ncV_chinese_center	10333
ncV_chinese_center_tree	5456
ncV_polint_center_tree	1512731
nmV_chinese_center	378542
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120536
nmV_polint_center_tree	378542
nmV_polint_center_tree_seq	120537
nmV_polint_center_tree_worker	973372
nonsquare1_Fl	12035609
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	429308
nxV_chinese_center_tree	303773
nxV_polint_center_tree	875364
odd_prime_divisors	1812
ome	334407404
opt_param	63
padic2mod	21
pgener_Fl	574899
pgener_Fl_local	1080972
pgener_Fp	44282
pgener_Fp_local	412331
pgener_Zl	205549
pgener_Zp	170793
pnqn	0
polint_chinese	378646
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	1886665
tr	59731
u_chinese_coprime	1638935
u_chinese_post	1638949
u_is_gener_expo	544970
u_odd_prime_divisors	463926
u_remove2	463927
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16