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 30735-65f72320ad)	Lines:	2275	2518	90.3 %
Date:	2026-03-10 09:24:00	Functions:	215	225	95.6 %
Legend:	Lines: hit not hit


Function Name	Hit count
CX_factor	21
FE_matconcat	252
Flv_factorback	108623
FlxqV_factorback	2499
FpV_factorback	8570337
Fpmul	29350899
Fppow	244859
FqV_factorback	14
Lazard	137738
Lazard2	298237
Q_content	1837234
Q_content_safe	1282608127
Q_content_v	179762532
Q_denom	4106388
Q_denom_safe	252798955
Q_denom_v	55653104
Q_div_to_int	515542
Q_divi_to_int	174393409
Q_divmuli_to_int	11556990
Q_divq_to_int	10290615
Q_factor	21602
Q_factor_limit	13790
Q_gcd	1013340169
Q_mul_to_int	0
Q_muli_to_int	143356410
Q_primitive_part	87784182
Q_primpart	10021859
Q_remove_denom	57272950
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	273617460
RgM_RgC_type	33484153
RgM_rescale_to_int	4709608
RgM_settype	49661055
RgM_type	830576
RgM_type2	7673348
RgV_type	776784
RgV_type2	203
RgXQ_charpoly	12911
RgXQ_charpoly_FpXQ	14
RgXQ_charpoly_fast	12911
RgXQ_charpoly_i	1228725
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	1542614
RgXQ_mul_FpXQ	274309
RgXQ_mul_FpXQXQ	385
RgXQ_mul_fast	1542614
RgXQ_ratlift	112
RgXQ_sqr	465867
RgXQ_sqr_FpXQ	14
RgXQ_sqr_FpXQXQ	0
RgXQ_sqr_fast	465867
RgXY_factor	252
RgXY_factor_squarefree	280
RgXY_squff	252
RgX_Frobenius_deflate	259
RgX_Rg_mul_i	893824
RgX_Rg_type	6070664
RgX_chinese_coprime	0
RgX_cmbf	6643
RgX_disc	124203
RgX_disc_FpX	42
RgX_disc_FpXQX	28
RgX_disc_fast	124203
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	13839
RgX_fix_quadratic	98
RgX_gcd	9327727
RgX_gcd_FpX	108773
RgX_gcd_FpXQX	7
RgX_gcd_FpXk	490
RgX_gcd_QXQX	3003
RgX_gcd_ZXQX	2261
RgX_gcd_fast	9327727
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	304585
RgX_resultant_sylvester	169914
RgX_settype	454210662
RgX_sturmpart	763
RgX_sylvestermatrix	169914
RgX_type	2469358
RgX_type2	109003085
RgX_type3	1542614
RgX_type_decode	11220090
RgX_type_is_composite	158607970
Rg_type	166614954
ZV_lcm	3577
ZX_content	13146
Z_content	10259054
Z_content_v	2381971
Zi_mul3	854
Zi_rem	427
_lcmii	8145
c_is_rational	3255
c_zero_gcd	1400
caract_const	126
centermod	11245003
centermod_i	14758816
centermodii	89995159
choosesubtype	31379289
choosetype	327916753
cont_gcd	2500807
cont_gcd_gen	2635
cont_gcd_pol	1652088
cont_gcd_pol_i	1652088
cont_gcd_rfrac	846105
content	71276462
deg1_from_roots	157225
factor	62378
factor0	59410
factor_domain	63078
factorback	1476444
factorback2	25470548
fix_lcm	105
fix_pol	343
gbezout	427
gc_gcdext	217
gcd3	6390
gcdext0	427
gcdiq	12789838
gcdmonome	1925
gcdqq	28378622
gdivexact	24023231
gen_cmp_RgXY	399
gen_factorback	34386985
ggcd	26910652
ggcd0	5203644
ghalfgcd	91
ginvmod	35231
glcm	3297
glcm0	2898
inexact	11396
init_resultant	1400665
isinexactall	2170
mul	55743544
must_negate	4375
newtonpoly	28
nextSousResultant	298237
normalized_mul	1720984
normalized_to_RgX	1041198
ok_bloc	455
padic_gcd	2726
pol_approx0	0
poldisc0	4721
polfromroots	56
polisirreducible	11165
polresultant0	504
polresultantext	1463
polresultantext0	1575
polsym	114185
polsym_gen	131601
powi	80750905
primitive_part	2066271
primpart	168
qgcd	154
quadratic_to_RgX	420
random_FpX_monic	119
reduceddiscsmith	7
reductum_lg	891891
rescale_init	30078764
resultant	1400637
resultant2	28
resultant_fast	1400637
rnfcharpoly	224
roots_from_deg1	63896
roots_to_pol	776774
roots_to_pol_FpV	14
roots_to_pol_FqV	7
roots_to_pol_fast	776700
roots_to_pol_r1	264533
row_Q_primpart	63763
s_centermod	0
scalar_bezout	112
scalar_res	7
settype	3586944170
sturmpart	385
sturmpart_i	1148
subres_step	11790
subresext	0
subresext_i	2346
syl_RgC	371755
syl_RgM	169921
sylvestermatrix	7
triv_cont_gcd	3276
vec_Q_primpart	121077
vecprod	10003
zero_bezout	63
zero_extgcd	434
zero_gcd	8170257
zero_gcd2	8781271

Generated by: LCOV version 1.16