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 30724-b49b12e983)	Lines:	2274	2517	90.3 %
Date:	2026-03-02 09:24:58	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	161
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
polresultant0	504
RgX_gcd_FpXk	518
R_to_Q_down	525
R_to_Q_up	525
RgX_sturmpart	763
RgXQ_inv_i	848
Zi_mul3	854
sturmpart_i	1148
polresultantext	1393
c_zero_gcd	1400
RgX_extresultant_fast	1498
polresultantext0	1505
gcdmonome	1925
isinexactall	2184
RgX_gcd_ZXQX	2261
subresext_i	2276
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	4368
RgX_extgcd_fast	4529
poldisc0	4721
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	11410
subres_step	11650
RgXQ_inv_FpXQ	12054
RgXQ_charpoly	12918
RgXQ_charpoly_fast	12918
ZX_content	13244
Q_factor_limit	13790
RgX_factor	13839
Q_factor	21621
ginvmod	35231
RgX_rescale_to_int	37485
factor0	59410
factor	62378
factor_domain	63078
row_Q_primpart	63763
roots_from_deg1	63896
Flv_factorback	108623
RgX_gcd_FpX	108752
polsym	114138
vec_Q_primpart	121077
RgX_disc	124202
RgX_disc_fast	124202
polsym_gen	131554
RgXQ_inv	135258
RgXQ_inv_fast	135258
Lazard	137736
deg1_from_roots	157203
RgX_resultant_sylvester	169914
RgX_sylvestermatrix	169914
syl_RgM	169921
Fppow	244859
roots_to_pol_r1	264533
RgX_pseudodenom	271484
RgXQ_mul_FpXQ	274309
RgX_neg_i	298236
Lazard2	298237
nextSousResultant	298237
RgX_resultant_all	304501
syl_RgC	371755
RgXQ_sqr	465865
RgXQ_sqr_fast	465865
Q_div_to_int	515538
roots_to_pol_fast	776695
roots_to_pol	776769
RgV_type	776779
RgM_type	830558
cont_gcd_rfrac	838260
reductum_lg	891894
RgX_Rg_mul_i	893827
normalized_to_RgX	1041194
RgXQ_charpoly_i	1228466
resultant	1400388
resultant_fast	1400388
init_resultant	1400416
factorback	1476446
RgXQ_mul_fast	1542402
RgX_type3	1542402
RgXQ_mul	1542403
cont_gcd_pol	1661060
cont_gcd_pol_i	1661060
normalized_mul	1720969
Q_content	1837141
primitive_part	2073916
Z_content_v	2382053
RgX_type	2469225
cont_gcd	2501934
Q_denom	4105931
RgM_rescale_to_int	4709589
ggcd0	5203644
RgX_Rg_type	6068998
RgM_type2	7673293
zero_gcd	8177210
FpV_factorback	8570162
zero_gcd2	8788196
RgX_gcd	9328595
RgX_gcd_fast	9328595
Q_primpart	10018752
Z_content	10259615
Q_divq_to_int	10290383
RgX_type_decode	11226523
centermod	11243743
Q_divmuli_to_int	11556064
gcdiq	12789068
centermod_i	14756997
gdivexact	23976740
factorback2	25470546
ggcd	26926474
gcdqq	28378070
Fpmul	29350243
rescale_init	30075075
choosesubtype	31488503
RgM_RgC_type	33484558
gen_factorback	34386794
RgM_settype	49661214
Q_denom_v	55641713
mul	55743544
Q_remove_denom	57262956
content	71301535
powi	80750895
Q_primitive_part	87777877
centermodii	89966416
RgX_type2	139700634
Q_muli_to_int	143364229
RgX_type_is_composite	158614605
Rg_type	166623201
Q_divi_to_int	174387241
Q_content_v	179758648
Q_denom_safe	252755538
RgC_settype	273625881
choosetype	358621551
RgX_settype	544580447
Q_gcd	1013396864
Q_content_safe	1282613568
settype	3680915934

Generated by: LCOV version 1.16