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 30666-e2f9826198)	Lines:	2271	2514	90.3 %
Date:	2026-02-04 09:22:32	Functions:	215	225	95.6 %
Legend:	Lines: hit not hit


Function Name	Hit count
CX_factor	21
FE_matconcat	259
Flv_factorback	108623
FlxqV_factorback	2499
FpV_factorback	8575831
Fpmul	29353726
Fppow	244859
FqV_factorback	14
Lazard	137738
Lazard2	298237
Q_content	1843494
Q_content_safe	1288206724
Q_content_v	182189106
Q_denom	4105985
Q_denom_safe	252764574
Q_denom_v	55642049
Q_div_to_int	515562
Q_divi_to_int	174894849
Q_divmuli_to_int	11575391
Q_divq_to_int	10407106
Q_factor	21609
Q_factor_limit	13784
Q_gcd	1014118080
Q_mul_to_int	0
Q_muli_to_int	143627004
Q_primitive_part	90198137
Q_primpart	10069642
Q_remove_denom	57261935
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	273671763
RgM_RgC_type	33490144
RgM_rescale_to_int	4709871
RgM_settype	49668222
RgM_type	830597
RgM_type2	7673955
RgV_type	776765
RgV_type2	203
RgXQ_charpoly	12921
RgXQ_charpoly_FpXQ	14
RgXQ_charpoly_fast	12921
RgXQ_charpoly_i	1228465
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	1542239
RgXQ_mul_FpXQ	274309
RgXQ_mul_FpXQXQ	385
RgXQ_mul_fast	1542239
RgXQ_ratlift	112
RgXQ_sqr	465859
RgXQ_sqr_FpXQ	14
RgXQ_sqr_FpXQXQ	0
RgXQ_sqr_fast	465859
RgXY_factor	259
RgXY_factor_squarefree	273
RgXY_squff	259
RgX_Frobenius_deflate	343
RgX_Rg_mul_i	893828
RgX_Rg_type	6070986
RgX_chinese_coprime	0
RgX_cmbf	6475
RgX_disc	124188
RgX_disc_FpX	42
RgX_disc_FpXQX	28
RgX_disc_fast	124188
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	13832
RgX_fix_quadratic	98
RgX_gcd	10414842
RgX_gcd_FpX	111909
RgX_gcd_FpXQX	7
RgX_gcd_FpXk	595
RgX_gcd_QXQX	3003
RgX_gcd_ZXQX	2261
RgX_gcd_fast	10414842
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	304483
RgX_resultant_sylvester	169935
RgX_settype	661686930
RgX_sturmpart	763
RgX_sylvestermatrix	169935
RgX_type	2474594
RgX_type2	147693136
RgX_type3	1542239
RgX_type_decode	11720504
RgX_type_is_composite	163901734
Rg_type	171962025
ZV_lcm	3577
ZX_content	13146
Z_content	10260081
Z_content_v	2382187
Zi_mul3	896
Zi_rem	448
_lcmii	8145
c_is_rational	3269
c_zero_gcd	1386
caract_const	126
centermod	11243284
centermod_i	14756488
centermodii	89878438
choosesubtype	38353634
choosetype	371967014
cont_gcd	1924962
cont_gcd_gen	2635
cont_gcd_pol	1912233
cont_gcd_pol_i	1912233
cont_gcd_rfrac	10115
content	72569523
deg1_from_roots	157204
factor	62377
factor0	59403
factor_domain	63071
factorback	1476438
factorback2	25470531
fix_lcm	105
fix_pol	343
gbezout	427
gc_gcdext	217
gcd3	6390
gcdext0	427
gcdiq	12795665
gcdmonome	3717
gcdqq	28386946
gdivexact	24035001
gen_cmp_RgXY	385
gen_factorback	34392443
ggcd	27702562
ggcd0	5203644
ghalfgcd	91
ginvmod	35231
glcm	3297
glcm0	2898
inexact	11424
init_resultant	1400428
isinexactall	2198
mul	55743546
must_negate	4368
newtonpoly	28
nextSousResultant	298237
normalized_mul	1720958
normalized_to_RgX	1041178
ok_bloc	434
padic_gcd	1435
pol_approx0	0
poldisc0	4719
polfromroots	56
polisirreducible	11165
polresultant0	504
polresultantext	1463
polresultantext0	1575
polsym	114135
polsym_gen	131551
powi	80750891
primitive_part	2902444
primpart	161
qgcd	154
quadratic_to_RgX	420
random_FpX_monic	112
reduceddiscsmith	7
reductum_lg	891895
rescale_init	30077060
resultant	1400399
resultant2	28
resultant_fast	1400399
rnfcharpoly	224
roots_from_deg1	63895
roots_to_pol	776755
roots_to_pol_FpV	14
roots_to_pol_FqV	7
roots_to_pol_fast	776681
roots_to_pol_r1	264533
row_Q_primpart	63763
s_centermod	0
scalar_bezout	112
scalar_res	7
settype	3822060784
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	8258399
zero_gcd2	8879829

Generated by: LCOV version 1.16