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 30615-cf6389b5bf) Lines: 2080 2301 90.4 % Date: 2026-01-16 09:21:08 Functions: 218 233 93.6 % Legend: Lines: hit not hit

Function Name	Hit count
ECP_psi	837
Fl_2gener_pre	188827
Fl_2gener_pre_i	65849
Fl_2powu	4359006
Fl_2powu_pre	12890273
Fl_lgener_pre_all	147062
Fl_log	132362
Fl_log_Fp	0
Fl_log_naive	132362
Fl_log_naive_pre	29006
Fl_log_pre	29404
Fl_order	546542
Fl_powers	296050
Fl_powers_pre	13034624
Fl_powu	141238990
Fl_powu_pre	165936524
Fl_sqrt	12405159
Fl_sqrt_i	12526734
Fl_sqrt_pre	23324445
Fl_sqrt_pre_i	35922533
Fl_sqrtl	0
Fl_sqrtl_pre	229828
Fl_sqrtl_raw	232788
Fl_sqrtn	233411
Fl_sqrtn_pre	233412
FpV_prod	497
Fp_2gener	3222
Fp_2gener_all	5909
Fp_2gener_i	19392
Fp_easylog	8819399
Fp_factored_order	70
Fp_gausssum	351
Fp_invgen	6095777
Fp_invmBarrett	14036
Fp_log	4259585
Fp_log_find_ind	126
Fp_log_find_rel	126
Fp_log_halfgcd	56489
Fp_log_index	63
Fp_log_sieve	63
Fp_log_sieve_worker	30241
Fp_log_use_index	5039808
Fp_order	136409
Fp_pow	37752016
Fp_pow_init	105
Fp_pow_table	43694
Fp_powers	5931
Fp_pows	1346192
Fp_powu	1754391
Fp_rem_mBarrett	8296561
Fp_rootsof1	820
Fp_select_red	869516
Fp_sqrt	4844276
Fp_sqrt_i	4897953
Fp_sqrt_ii	75169
Fp_sqrtn	173541
Fp_sqrts	18948
Qsfcont	3137414
ZMV_producttree	0
ZM_nv_mod_tree	215593
ZM_nv_mod_tree_t	221050
ZT_sqr	13610509
ZVV_nv_mod_tree	5457
ZV_allpnqn	894831
ZV_chinese	5141
ZV_chinese_center	157108
ZV_chinese_tree	40688917
ZV_chinesetree	2630967
ZV_invdivexact	2631008
ZV_nv_mod_tree	1234879
ZV_producttree	2634954
ZV_sqr	2631031
ZXC_nv_mod_tree	5634
ZXM_nv_mod_tree	491
ZXX_nv_mod_tree	254437
ZX_nv_mod_tree	3098295
Z_ZV_mod	0
Z_ZV_mod_tree	58083136
Z_chinese	2142
Z_chinese_all	268106
Z_chinese_coprime	547157
Z_chinese_post	3072805
Z_chinese_pre	271829
Z_factor_listP	350651
Z_nv_mod	0
Zp_order	70
_Fp_add	1175565
_Fp_equal0	260724
_Fp_inv	34307
_Fp_mul	14228461
_Fp_neg	1086846
_Fp_one	47162
_Fp_pow	28603427
_Fp_rand	160
_Fp_red	889913
_Fp_rmul	575346
_Fp_s	19075
_Fp_sqr	8134253
_computeG	837
_gc_upto	112
_mul2_montred	9355808
_mul2_remii	3531458
_mul2_remiibar	1797854
_mul_montred	6662659
_mul_remii	1464739
_mul_remiibar	717268
_psi	1714
_sqr_montred	63005543
_sqr_remii	23441886
_sqr_remiibar	7579293
addifsmooth1	2163
addifsmooth2	83825
bestappr	105628
bestapprPade	119
bestapprPade0	126
bestappr_Q	2295208
bestappr_RgX	119
bestappr_frac	7
bestappr_real	1275290
bestappr_ser	98
check_kernel	63
checkp	2583937
chinese	5495
chinese1	2415
chinese1_coprime_Z	2460639
chinese1_coprime_Z_aux	2253538
compute_nbgen	63
contfrac0	49
contfracpnqn	266
err_oo	56
err_p	161
err_prec	196
factorial_Fl	56774
factorial_Fp	186
fibo	7
gboundcf	3142391
gc_chinese	980502
gc_empty	42
gcf	126
gcf2	0
gen_chinese	2463054
gener_Zp	259
get_Fp_field	6963
get_PHI	98
gome	5846478
hilbert	62314
hilbertii	140826
icopy_lg	3137064
init_montdata	661610
intmod2polmod	21
is_gener_Fl	1662325
is_gener_Fp	13952
is_gener_expo	4909
istotient	70000
istotient_i	621565
krois	40089
kroiu	27622679
kronecker	12750950
krosi	159682
kross	100335619
kroui	35678
krouodd	195360
krouu	102490107
krouu_s	235260371
lcmii	54524853
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	159075
mulu_interval_step	92803
ncV_chinese_center	10333
ncV_chinese_center_tree	5457
ncV_polint_center_tree	1512655
nmV_chinese_center	378508
nmV_chinese_center_tree	0
nmV_chinese_center_tree_seq	120526
nmV_polint_center_tree	378508
nmV_polint_center_tree_seq	120525
nmV_polint_center_tree_worker	973321
nonsquare1_Fl	12025315
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	429309
nxV_chinese_center_tree	303766
nxV_polint_center_tree	875527
odd_prime_divisors	1812
ome	334097938
opt_param	63
padic2mod	21
pgener_Fl	574889
pgener_Fl_local	1080959
pgener_Fp	44282
pgener_Fp_local	412320
pgener_Zl	205549
pgener_Zp	170793
pnqn	0
polint_chinese	378612
remove2	1812
rootsof1_Fl	215524
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	1886636
tr	59731
u_chinese_coprime	1638687
u_chinese_post	1638709
u_is_gener_expo	544976
u_odd_prime_divisors	463930
u_remove2	463930
znlog	238
znlog_rec	126
znorder	63
znprimroot	329

Generated by: LCOV version 1.16