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:	2026-03-09 09:24:55	Functions:	215	225	95.6 %
Legend:	Lines: hit not hit


Function Name	Hit count
Q_mul_to_int	0
RgXQ_sqr_FpXQXQ	0
RgX_chinese_coprime	0
RgX_extgcd_simple	0
RgX_gcd_simple	0
RgX_halfgcd	0
RgX_halfgcd_all_FpXQX	0
pol_approx0	0
s_centermod	0
subresext	0
RgXQ_inv_FpXQXQ	7
RgX_extgcd_FpXQX	7
RgX_gcd_FpXQX	7
reduceddiscsmith	7
roots_to_pol_FqV	7
scalar_res	7
sylvestermatrix	7
FqV_factorback	14
RgXQ_charpoly_FpXQ	14
RgXQ_sqr_FpXQ	14
RgX_halfgcd_all_i	14
roots_to_pol_FpV	14
CX_factor	21
RgX_resultant_FpXQX	21
RX_factor	28
RgX_disc_FpXQX	28
RgX_halfgcd_all_FpX	28
RgX_resultant_FpX	28
newtonpoly	28
resultant2	28
Qi_factor_p	42
RgX_disc_FpX	42
Qi_factor	49
Qi_primpart	49
polfromroots	56
RgX_halfgcd_all	63
RgX_halfgcd_all_fast	63
zero_bezout	63
Qi_primpart_try	70
RgX_extresultant_FpX	77
Qi_cmp	91
ghalfgcd	91
RgX_fix_quadratic	98
fix_lcm	105
RgXQ_ratlift	112
scalar_bezout	112
random_FpX_monic	119
caract_const	126
RgX_extgcd_FpX	133
qgcd	154
primpart	168
RgV_type2	203
gc_gcdext	217
rnfcharpoly	224
FE_matconcat	252
RgXQ_factor	252
RgXQ_factor_i	252
RgXY_factor	252
RgXY_squff	252
RgX_Frobenius_deflate	259
RgXY_factor_squarefree	280
fix_pol	343
RgXQ_mul_FpXQXQ	385
sturmpart	385
Qi_gcd	399
gen_cmp_RgXY	399
RgX_disc_i	413
quadratic_to_RgX	420
Zi_rem	427
gbezout	427
gcdext0	427
zero_extgcd	434
ok_bloc	455
Qi_normal	469
RgX_gcd_FpXk	490
polresultant0	504
R_to_Q_down	525
R_to_Q_up	525
RgX_sturmpart	763
RgXQ_inv_i	848
Zi_mul3	854
sturmpart_i	1148
c_zero_gcd	1400
polresultantext	1463
RgX_extresultant_fast	1568
polresultantext0	1575
gcdmonome	1925
isinexactall	2170
RgX_gcd_ZXQX	2261
subresext_i	2346
FlxqV_factorback	2499
cont_gcd_gen	2635
padic_gcd	2726
glcm0	2898
RgX_gcd_QXQX	3003
c_is_rational	3255
triv_cont_gcd	3276
glcm	3297
ZV_lcm	3577
must_negate	4375
RgX_extgcd_fast	4529
poldisc0	4720
RgX_extgcd	4970
gcd3	6390
RgX_cmbf	6643
_lcmii	8145
vecprod	10003
RgX_liftred	10528
RgX_is_irred	11165
RgX_is_irred_i	11165
polisirreducible	11165
inexact	11396
subres_step	11790
RgXQ_inv_FpXQ	12054
RgXQ_charpoly	12910
RgXQ_charpoly_fast	12910
ZX_content	13146
Q_factor_limit	13795
RgX_factor	13839
Q_factor	21600
ginvmod	35231
RgX_rescale_to_int	37485
factor0	59410
factor	62377
factor_domain	63078
row_Q_primpart	63763
roots_from_deg1	63894
Flv_factorback	108623
RgX_gcd_FpX	108773
polsym	114185
vec_Q_primpart	121077
RgX_disc	124202
RgX_disc_fast	124202
polsym_gen	131602
RgXQ_inv	135258
RgXQ_inv_fast	135258
Lazard	137738
deg1_from_roots	157225
RgX_resultant_sylvester	169914
RgX_sylvestermatrix	169914
syl_RgM	169921
Fppow	244859
roots_to_pol_r1	264534
RgX_pseudodenom	271486
RgXQ_mul_FpXQ	274309
Lazard2	298237
RgX_neg_i	298237
nextSousResultant	298237
RgX_resultant_all	304620
syl_RgC	371755
RgXQ_sqr	465868
RgXQ_sqr_fast	465868
Q_div_to_int	515594
roots_to_pol_fast	776698
roots_to_pol	776772
RgV_type	776782
RgM_type	830577
cont_gcd_rfrac	846105
reductum_lg	891895
RgX_Rg_mul_i	893827
normalized_to_RgX	1041196
RgXQ_charpoly_i	1228721
resultant	1400631
resultant_fast	1400642
init_resultant	1400669
factorback	1476441
RgXQ_mul_fast	1542614
RgX_type3	1542614
RgXQ_mul	1542615
cont_gcd_pol	1652088
cont_gcd_pol_i	1652088
normalized_mul	1720974
Q_content	1837234
primitive_part	2066376
Z_content_v	2382001
RgX_type	2469382
cont_gcd	2500807
Q_denom	4106405
RgM_rescale_to_int	4709311
ggcd0	5203644
RgX_Rg_type	6070581
RgM_type2	7673173
zero_gcd	8170271
FpV_factorback	8570380
zero_gcd2	8781285
RgX_gcd	9327726
RgX_gcd_fast	9327726
Q_primpart	10021840
Z_content	10259162
Q_divq_to_int	10290668
RgX_type_decode	11220090
centermod	11245816
Q_divmuli_to_int	11557018
gcdiq	12789925
centermod_i	14759287
gdivexact	24030267
factorback2	25470549
ggcd	26910718
gcdqq	28378720
Fpmul	29350898
rescale_init	30082656
choosesubtype	31379292
RgM_RgC_type	33484804
gen_factorback	34387033
RgM_settype	49661341
Q_denom_v	55653829
mul	55743545
Q_remove_denom	57275112
content	71276566
powi	80750904
Q_primitive_part	87784782
centermodii	89979092
RgX_type2	109002482
Q_muli_to_int	143364004
RgX_type_is_composite	158607970
Rg_type	166614953
Q_divi_to_int	174396043
Q_content_v	179766585
Q_denom_safe	252809375
RgC_settype	273620696
choosetype	327916035
RgX_settype	454209824
Q_gcd	1013444921
Q_content_safe	1282702896
settype	3587002132

Generated by: LCOV version 1.16