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 30640-c2c58e18c5) Lines: 2270 2514 90.3 % Date: 2026-01-27 08:51:18 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
random_FpX_monic	112
scalar_bezout	112
caract_const	126
RgX_extgcd_FpX	133
qgcd	154
primpart	161
RgV_type2	203
gc_gcdext	217
rnfcharpoly	224
RgXQ_factor	252
RgXQ_factor_i	252
FE_matconcat	259
RgXY_factor	259
RgXY_squff	259
RgXY_factor_squarefree	273
RgX_Frobenius_deflate	343
fix_pol	343
RgXQ_mul_FpXQXQ	385
gen_cmp_RgXY	385
sturmpart	385
Qi_gcd	399
RgX_disc_i	413
quadratic_to_RgX	420
gbezout	427
gcdext0	427
ok_bloc	434
zero_extgcd	434
Zi_rem	448
Qi_normal	469
polresultant0	504
R_to_Q_down	525
R_to_Q_up	525
RgX_gcd_FpXk	595
RgX_sturmpart	763
RgXQ_inv_i	848
Zi_mul3	896
sturmpart_i	1148
c_zero_gcd	1386
padic_gcd	1435
polresultantext	1463
RgX_extresultant_fast	1568
polresultantext0	1575
isinexactall	2198
RgX_gcd_ZXQX	2261
subresext_i	2346
FlxqV_factorback	2499
cont_gcd_gen	2635
glcm0	2898
RgX_gcd_QXQX	3003
c_is_rational	3269
triv_cont_gcd	3276
glcm	3297
ZV_lcm	3577
gcdmonome	3717
must_negate	4368
RgX_is_irred	4410
RgX_is_irred_i	4410
polisirreducible	4410
RgX_extgcd_fast	4529
poldisc0	4721
RgX_extgcd	4970
gcd3	6390
RgX_cmbf	6475
RgX_factor	7077
Q_factor_limit	7550
_lcmii	8145
vecprod	10003
cont_gcd_rfrac	10115
RgX_liftred	10528
inexact	11424
roots_from_deg1	11654
subres_step	11790
RgXQ_charpoly	11840
RgXQ_charpoly_fast	11840
RgXQ_inv_FpXQ	12054
Q_factor	12396
ZX_content	13146
ginvmod	34999
RgX_rescale_to_int	37485
factor0	59403
factor	62378
factor_domain	63071
row_Q_primpart	63749
polsym	93502
Flv_factorback	108623
polsym_gen	110457
RgX_gcd_FpX	111909
vec_Q_primpart	120972
RgX_disc	124189
RgX_disc_fast	124189
RgXQ_inv	135258
RgXQ_inv_fast	135258
Lazard	137629
deg1_from_roots	149700
RgX_resultant_sylvester	169935
RgX_sylvestermatrix	169935
syl_RgM	169942
roots_to_pol_r1	181157
RgX_resultant_all	242906
Fppow	244474
RgX_pseudodenom	271270
RgXQ_mul_FpXQ	274309
Lazard2	298129
RgX_neg_i	298129
nextSousResultant	298129
syl_RgC	371797
RgXQ_sqr	459469
RgXQ_sqr_fast	459469
Q_div_to_int	480479
RgM_type	710884
roots_to_pol_fast	771333
roots_to_pol	771407
RgV_type	771417
reductum_lg	891584
RgX_Rg_mul_i	893514
normalized_to_RgX	952453
RgXQ_charpoly_i	1131775
resultant	1303712
resultant_fast	1303713
init_resultant	1303742
normalized_mul	1422453
factorback	1461905
RgXQ_mul	1475971
RgXQ_mul_fast	1475972
RgX_type3	1475973
Q_content	1835107
cont_gcd_pol	1912233
cont_gcd_pol_i	1912233
cont_gcd	1924962
Z_content_v	2128617
RgX_type	2403355
primitive_part	2702509
Q_denom	3978846
RgM_rescale_to_int	4569502
ggcd0	5203644
RgX_Rg_type	5700827
RgM_type2	7383520
FpV_factorback	8249540
zero_gcd	8250822
zero_gcd2	8874332
Z_content	9425921
Q_primpart	9550884
centermod	9579500
Q_divq_to_int	10158418
RgX_gcd	10413761
RgX_gcd_fast	10413761
Q_divmuli_to_int	11561719
RgX_type_decode	11719880
gcdiq	12351910
gdivexact	12472115
centermod_i	13062194
factorback2	25448560
ggcd	27663520
gcdqq	27839782
Fpmul	28790031
rescale_init	28873499
RgM_RgC_type	32371456
gen_factorback	34010128
choosesubtype	38253119
RgM_settype	47849021
Q_denom_v	51411447
Q_remove_denom	53875630
mul	55742689
content	72355163
powi	80730491
centermodii	81541165
Q_primitive_part	85863403
Q_muli_to_int	137398368
RgX_type2	145462330
RgX_type_is_composite	163849456
Q_divi_to_int	170435220
Rg_type	171895340
Q_content_v	172328296
Q_denom_safe	237902082
RgC_settype	265737429
choosetype	367627819
RgX_settype	656454151
Q_gcd	967897877
Q_content_safe	1227760846
settype	3770184258

Generated by: LCOV version 1.16