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 30660-09c6d0ed2e) Lines: 2080 2301 90.4 % Date: 2026-02-02 09:23:03 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	1457
_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	5632
Fp_2gener_all	5909
Fp_powers	5931
nxCV_polint_center_tree	6585
get_Fp_field	6963
mphilbertoo	7329
nonsquare_Fl	7930
ncV_chinese_center	10333
is_gener_Fp	13956
Fp_invmBarrett	14036
Fp_sqrts	18945
_Fp_s	19075
Fp_2gener_i	19392
Fl_log_naive_pre	29020
Fl_log_pre	29418
Fp_log_sieve_worker	30249
_Fp_inv	34307
kroui	35681
krois	40089
Fp_pow_table	43694
pgener_Fp	44282
_Fp_one	47162
Fp_log_halfgcd	55922
factorial_Fl	56778
tr	59731
hilbert	62314
Fl_2gener_pre_i	65849
istotient	70000
Fp_sqrt_ii	75158
addifsmooth2	83825
mulu_interval_step	92782
bestappr	105620
nmV_chinese_center_tree_seq	120529
nmV_polint_center_tree_seq	120530
Fl_log	132362
Fl_log_naive	132362
Fp_order	136398
hilbertii	140826
Fl_lgener_pre_all	147097
ZV_chinese_center	156865
mulu_interval	159071
krosi	159682
rt	169813
pgener_Zp	170793
Fp_sqrtn	173541
Fl_2gener_pre	188808
krouodd	195363
pgener_Zl	205549
rootsof1_Fl	215524
ZM_nv_mod_tree	215597
ZM_nv_mod_tree_t	221055
Fl_sqrtl_pre	230105
Fl_sqrtl_raw	233064
Fl_sqrtn	233410
Fl_sqrtn_pre	233410
ZXX_nv_mod_tree	254429
_Fp_equal0	260724
Z_chinese_all	268112
Z_chinese_pre	271829
Fl_powers	296050
nxV_chinese_center_tree	303779
Z_factor_listP	350651
nmV_chinese_center	378521
nmV_polint_center_tree	378522
polint_chinese	378626
pgener_Fp_local	412315
nxV_chinese_center	429309
u_odd_prime_divisors	463923
u_remove2	463924
mpfact	498565
u_is_gener_expo	544968
Fl_order	546531
Z_chinese_coprime	547159
pgener_Fl	574896
_Fp_rmul	575346
istotient_i	621565
init_montdata	661587
_mul_remiibar	717268
Fp_select_red	869449
nxV_polint_center_tree	875460
_Fp_red	889913
ZV_allpnqn	894831
nmV_polint_center_tree_worker	973345
gc_chinese	980272
pgener_Fl_local	1080967
_Fp_neg	1086846
_Fp_add	1175565
ZV_nv_mod_tree	1235152
bestappr_real	1273782
Fp_pows	1346192
_mul_remii	1472139
ncV_polint_center_tree	1512662
u_chinese_coprime	1638699
u_chinese_post	1638711
is_gener_Fl	1662321
Fp_powu	1754396
_mul2_remiibar	1797854
to_ZX	1885397
chinese1_coprime_Z_aux	2253538
bestappr_Q	2293077
chinese1_coprime_Z	2460677
gen_chinese	2463092
checkp	2575903
ZV_invdivexact	2630105
ZV_chinesetree	2630131
ZV_sqr	2630145
ZV_producttree	2634012
Z_chinese_post	3072797
ZX_nv_mod_tree	3096146
icopy_lg	3137064
Qsfcont	3137414
gboundcf	3142391
_mul2_remii	3533367
Fp_log	4259577
Fl_2powu	4358969
Fp_sqrt	4844396
Fp_sqrt_i	4898071
Fp_log_use_index	5039796
gome	5846442
Fp_invgen	6095409
_mul_montred	6663438
_sqr_remiibar	7579293
_Fp_sqr	8134253
Fp_rem_mBarrett	8296561
Fp_easylog	8819512
_mul2_montred	9357147
nonsquare1_Fl	12031297
Fl_sqrt	12404325
Fl_sqrt_i	12526593
kronecker	12750936
Fl_2powu_pre	12894847
Fl_powers_pre	13059248
ZT_sqr	13608848
_Fp_mul	14228685
Fl_sqrt_pre	23352972
_sqr_remii	23364124
kroiu	27626553
_Fp_pow	28603368
Fl_sqrt_pre_i	35956030
Fp_pow	37752809
ZV_chinese_tree	40743099
lcmii	54526098
Z_ZV_mod_tree	58108750
_sqr_montred	63028870
kross	100335614
krouu	102565682
Fl_powu	141446134
Fl_powu_pre	166182360
krouu_s	235344863
ome	334418819

Generated by: LCOV version 1.16