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 - polarit2.c (source / functions)		Hit	Total	Coverage
Test:	PARI/GP v2.18.1 lcov report (development 30674-be81ecfdd4)	Lines:	2270	2515	90.3 %
Date:	2026-02-11 09:23:10	Functions:	215	225	95.6 %
Legend:	Lines: hit not hit


Function Name	Hit count
CX_factor	21
FE_matconcat	266
Flv_factorback	108623
FlxqV_factorback	2499
FpV_factorback	8575857
Fpmul	29353782
Fppow	244859
FqV_factorback	14
Lazard	137737
Lazard2	298237
Q_content	1843555
Q_content_safe	1287868814
Q_content_v	182034426
Q_denom	4105963
Q_denom_safe	252769303
Q_denom_v	55642890
Q_div_to_int	515462
Q_divi_to_int	174792130
Q_divmuli_to_int	11575320
Q_divq_to_int	10303486
Q_factor	21608
Q_factor_limit	13791
Q_gcd	1014148437
Q_mul_to_int	0
Q_muli_to_int	143421060
Q_primitive_part	89990516
Q_primpart	10069805
Q_remove_denom	57262729
Qi_cmp	91
Qi_factor	49
Qi_factor_p	42
Qi_gcd	399
Qi_normal	469
Qi_primpart	49
Qi_primpart_try	70
RX_factor	28
R_to_Q_down	525
R_to_Q_up	525
RgC_settype	273669639
RgM_RgC_type	33489609
RgM_rescale_to_int	4709754
RgM_settype	49667182
RgM_type	830643
RgM_type2	7673662
RgV_type	776764
RgV_type2	203
RgXQ_charpoly	12917
RgXQ_charpoly_FpXQ	14
RgXQ_charpoly_fast	12917
RgXQ_charpoly_i	1228505
RgXQ_factor	252
RgXQ_factor_i	252
RgXQ_inv	135258
RgXQ_inv_FpXQ	12054
RgXQ_inv_FpXQXQ	7
RgXQ_inv_fast	135258
RgXQ_inv_i	848
RgXQ_mul	1542234
RgXQ_mul_FpXQ	274309
RgXQ_mul_FpXQXQ	385
RgXQ_mul_fast	1542240
RgXQ_ratlift	112
RgXQ_sqr	465856
RgXQ_sqr_FpXQ	14
RgXQ_sqr_FpXQXQ	0
RgXQ_sqr_fast	465856
RgXY_factor	266
RgXY_factor_squarefree	280
RgXY_squff	266
RgX_Frobenius_deflate	329
RgX_Rg_mul_i	893827
RgX_Rg_type	6070987
RgX_chinese_coprime	0
RgX_cmbf	6643
RgX_disc	124184
RgX_disc_FpX	42
RgX_disc_FpXQX	28
RgX_disc_fast	124184
RgX_disc_i	413
RgX_extgcd	4970
RgX_extgcd_FpX	133
RgX_extgcd_FpXQX	7
RgX_extgcd_fast	4529
RgX_extgcd_simple	0
RgX_extresultant_FpX	77
RgX_extresultant_fast	1568
RgX_factor	13853
RgX_fix_quadratic	98
RgX_gcd	10411716
RgX_gcd_FpX	108808
RgX_gcd_FpXQX	7
RgX_gcd_FpXk	602
RgX_gcd_QXQX	3003
RgX_gcd_ZXQX	2261
RgX_gcd_fast	10411716
RgX_gcd_simple	0
RgX_halfgcd	0
RgX_halfgcd_all	63
RgX_halfgcd_all_FpX	28
RgX_halfgcd_all_FpXQX	0
RgX_halfgcd_all_fast	63
RgX_halfgcd_all_i	14
RgX_is_irred	11165
RgX_is_irred_i	11165
RgX_liftred	10528
RgX_neg_i	298237
RgX_pseudodenom	271486
RgX_rescale_to_int	37485
RgX_resultant_FpX	28
RgX_resultant_FpXQX	21
RgX_resultant_all	304549
RgX_resultant_sylvester	169935
RgX_settype	660916042
RgX_sturmpart	763
RgX_sylvestermatrix	169935
RgX_type	2474883
RgX_type2	147311634
RgX_type3	1542240
RgX_type_decode	11720574
RgX_type_is_composite	163896923
Rg_type	171957204
ZV_lcm	3577
ZX_content	13146
Z_content	10259614
Z_content_v	2382057
Zi_mul3	854
Zi_rem	427
_lcmii	8145
c_is_rational	3255
c_zero_gcd	1400
caract_const	126
centermod	11243379
centermod_i	14756419
centermodii	89896334
choosesubtype	38353587
choosetype	371580103
cont_gcd	1925025
cont_gcd_gen	2635
cont_gcd_pol	1912296
cont_gcd_pol_i	1912296
cont_gcd_rfrac	10115
content	72564507
deg1_from_roots	157198
factor	62378
factor0	59410
factor_domain	63092
factorback	1476439
factorback2	25470540
fix_lcm	105
fix_pol	343
gbezout	427
gc_gcdext	217
gcd3	6390
gcdext0	427
gcdiq	12795673
gcdmonome	3689
gcdqq	28386982
gdivexact	24031138
gen_cmp_RgXY	399
gen_factorback	34392489
ggcd	27657097
ggcd0	5203644
ghalfgcd	91
ginvmod	35231
glcm	3297
glcm0	2898
inexact	11410
init_resultant	1400476
isinexactall	2184
mul	55743538
must_negate	4368
newtonpoly	28
nextSousResultant	298237
normalized_mul	1720946
normalized_to_RgX	1041179
ok_bloc	455
padic_gcd	2726
pol_approx0	0
poldisc0	4718
polfromroots	56
polisirreducible	11165
polresultant0	504
polresultantext	1463
polresultantext0	1575
polsym	114135
polsym_gen	131551
powi	80750878
primitive_part	2902409
primpart	161
qgcd	154
quadratic_to_RgX	420
random_FpX_monic	119
reduceddiscsmith	7
reductum_lg	891895
rescale_init	30078209
resultant	1400448
resultant2	28
resultant_fast	1400448
rnfcharpoly	224
roots_from_deg1	63894
roots_to_pol	776754
roots_to_pol_FpV	14
roots_to_pol_FqV	7
roots_to_pol_fast	776680
roots_to_pol_r1	264533
row_Q_primpart	63763
s_centermod	0
scalar_bezout	112
scalar_res	7
settype	3821165279
sturmpart	385
sturmpart_i	1148
subres_step	11790
subresext	0
subresext_i	2346
syl_RgC	371797
syl_RgM	169942
sylvestermatrix	7
triv_cont_gcd	3276
vec_Q_primpart	121077
vecprod	10003
zero_bezout	63
zero_extgcd	434
zero_gcd	8254476
zero_gcd2	8864944

Generated by: LCOV version 1.16