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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 90.3 % 2530 2284 Test Date: 2026-08-28 17:03:13 Functions: 95.6 % 225 215 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
RgXY_factor_squarefree	280
RgX_Frobenius_deflate	329
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	434
gcdext0	434
zero_extgcd	434
ok_bloc	455
Qi_normal	469
R_to_Q_down	525
R_to_Q_up	525
RgX_gcd_FpXk	595
polresultant0	637
RgX_sturmpart	763
Zi_mul3	854
RgXQ_inv_i	862
sturmpart_i	1148
c_zero_gcd	1400
polresultantext	1463
RgX_extresultant_fast	1568
polresultantext0	1575
isinexactall	2184
subresext_i	2360
FlxqV_factorback	2499
RgX_gcd_ZXQX	2499
cont_gcd_gen	2635
padic_gcd	2726
glcm0	2898
RgX_gcd_QXQX	3045
c_is_rational	3255
triv_cont_gcd	3276
glcm	3297
ZV_lcm	3605
gcdmonome	3689
must_negate	4368
RgX_extgcd_fast	4529
poldisc0	4721
RgX_extgcd	4970
gcd3	6390
RgX_cmbf	6643
_lcmii	8194
cont_gcd_rfrac	10115
vecprod	10878
RgX_liftred	11088
RgX_is_irred	11165
RgX_is_irred_i	11165
polisirreducible	11165
inexact	11410
subres_step	11804
RgXQ_inv_FpXQ	12054
RgXQ_charpoly	12914
RgXQ_charpoly_fast	12914
ZX_content	13146
Q_factor_limit	13746
RgX_factor	13846
Q_factor	21672
ginvmod	35231
RgX_rescale_to_int	37485
factor0	59441
row_Q_primpart	63763
factor	63823
roots_from_deg1	63896
factor_domain	64523
Flv_factorback	108623
RgX_gcd_FpX	109025
polsym	114691
vec_Q_primpart	121077
RgX_disc	127767
RgX_disc_fast	127767
polsym_gen	133437
RgXQ_inv	135272
RgXQ_inv_fast	135272
Lazard	137739
deg1_from_roots	159705
RgX_resultant_sylvester	169914
RgX_sylvestermatrix	169914
syl_RgM	169921
Fppow	244859
roots_to_pol_r1	262660
RgX_pseudodenom	271488
RgXQ_mul_FpXQ	274309
Lazard2	298238
RgX_neg_i	298238
nextSousResultant	298238
RgX_resultant_all	305192
syl_RgC	371755
RgXQ_sqr	466427
RgXQ_sqr_fast	466427
Q_div_to_int	516096
RgM_type	856644
reductum_lg	891900
RgX_Rg_mul_i	893832
roots_to_pol_fast	910393
roots_to_pol	910467
RgV_type	910477
normalized_to_RgX	1173018
RgXQ_charpoly_i	1229579
resultant	1401628
resultant_fast	1401628
init_resultant	1401656
factorback	1513067
RgXQ_mul	1542689
RgXQ_mul_fast	1542689
RgX_type3	1542689
Q_content	1843800
normalized_mul	1847092
cont_gcd_pol	1912527
cont_gcd_pol_i	1912527
cont_gcd	1925256
Z_content_v	2381806
RgX_type	2760815
primitive_part	2900517
Q_denom	4108753
RgM_rescale_to_int	4714072
ggcd0	5219163
RgX_Rg_type	6584701
RgM_type2	7677819
zero_gcd	8255815
zero_gcd2	8867021
FpV_factorback	8999045
Q_primpart	10089800
Z_content	10258483
RgX_gcd	10413043
RgX_gcd_fast	10413043
Q_divq_to_int	11039625
RgX_type_decode	11717928
Q_divmuli_to_int	12377864
centermod	12501401
gcdiq	12978090
centermod_i	16026077
gdivexact	24315304
factorback2	25507511
ggcd	27681089
gcdqq	29126013
Fpmul	30139353
rescale_init	30562588
RgM_RgC_type	33498484
gen_factorback	34854372
choosesubtype	38359147
RgM_settype	49710402
mul	55806671
Q_denom_v	55937152
Q_remove_denom	57383121
content	72602385
powi	80850868
Q_primitive_part	90942267
centermodii	91895097
Q_muli_to_int	145572313
RgX_type2	151505409
RgX_type_is_composite	164076379
Rg_type	172523275
Q_divi_to_int	175468974
Q_content_v	183157847
Q_denom_safe	254016674
RgC_settype	273873295
choosetype	377313291
RgX_settype	670679296
Q_gcd	1016543826
Q_content_safe	1292528726
settype	3847903791

Generated by: LCOV version 2.0-1