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
CX_factor	21
FE_matconcat	259
Flv_factorback	108623
FlxqV_factorback	2499
FpV_factorback	8249540
Fpmul	28790031
Fppow	244474
FqV_factorback	14
Lazard	137629
Lazard2	298129
Q_content	1835107
Q_content_safe	1227760846
Q_content_v	172328296
Q_denom	3978846
Q_denom_safe	237902082
Q_denom_v	51411447
Q_div_to_int	480479
Q_divi_to_int	170435220
Q_divmuli_to_int	11561719
Q_divq_to_int	10158418
Q_factor	12396
Q_factor_limit	7550
Q_gcd	967897877
Q_mul_to_int	0
Q_muli_to_int	137398368
Q_primitive_part	85863403
Q_primpart	9550884
Q_remove_denom	53875630
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	265737429
RgM_RgC_type	32371456
RgM_rescale_to_int	4569502
RgM_settype	47849021
RgM_type	710884
RgM_type2	7383520
RgV_type	771417
RgV_type2	203
RgXQ_charpoly	11840
RgXQ_charpoly_FpXQ	14
RgXQ_charpoly_fast	11840
RgXQ_charpoly_i	1131775
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	1475971
RgXQ_mul_FpXQ	274309
RgXQ_mul_FpXQXQ	385
RgXQ_mul_fast	1475972
RgXQ_ratlift	112
RgXQ_sqr	459469
RgXQ_sqr_FpXQ	14
RgXQ_sqr_FpXQXQ	0
RgXQ_sqr_fast	459469
RgXY_factor	259
RgXY_factor_squarefree	273
RgXY_squff	259
RgX_Frobenius_deflate	343
RgX_Rg_mul_i	893514
RgX_Rg_type	5700827
RgX_chinese_coprime	0
RgX_cmbf	6475
RgX_disc	124189
RgX_disc_FpX	42
RgX_disc_FpXQX	28
RgX_disc_fast	124189
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	7077
RgX_fix_quadratic	98
RgX_gcd	10413761
RgX_gcd_FpX	111909
RgX_gcd_FpXQX	7
RgX_gcd_FpXk	595
RgX_gcd_QXQX	3003
RgX_gcd_ZXQX	2261
RgX_gcd_fast	10413761
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	4410
RgX_is_irred_i	4410
RgX_liftred	10528
RgX_neg_i	298129
RgX_pseudodenom	271270
RgX_rescale_to_int	37485
RgX_resultant_FpX	28
RgX_resultant_FpXQX	21
RgX_resultant_all	242906
RgX_resultant_sylvester	169935
RgX_settype	656454151
RgX_sturmpart	763
RgX_sylvestermatrix	169935
RgX_type	2403355
RgX_type2	145462330
RgX_type3	1475973
RgX_type_decode	11719880
RgX_type_is_composite	163849456
Rg_type	171895340
ZV_lcm	3577
ZX_content	13146
Z_content	9425921
Z_content_v	2128617
Zi_mul3	896
Zi_rem	448
_lcmii	8145
c_is_rational	3269
c_zero_gcd	1386
caract_const	126
centermod	9579500
centermod_i	13062194
centermodii	81541165
choosesubtype	38253119
choosetype	367627819
cont_gcd	1924962
cont_gcd_gen	2635
cont_gcd_pol	1912233
cont_gcd_pol_i	1912233
cont_gcd_rfrac	10115
content	72355163
deg1_from_roots	149700
factor	62378
factor0	59403
factor_domain	63071
factorback	1461905
factorback2	25448560
fix_lcm	105
fix_pol	343
gbezout	427
gc_gcdext	217
gcd3	6390
gcdext0	427
gcdiq	12351910
gcdmonome	3717
gcdqq	27839782
gdivexact	12472115
gen_cmp_RgXY	385
gen_factorback	34010128
ggcd	27663520
ggcd0	5203644
ghalfgcd	91
ginvmod	34999
glcm	3297
glcm0	2898
inexact	11424
init_resultant	1303742
isinexactall	2198
mul	55742689
must_negate	4368
newtonpoly	28
nextSousResultant	298129
normalized_mul	1422453
normalized_to_RgX	952453
ok_bloc	434
padic_gcd	1435
pol_approx0	0
poldisc0	4721
polfromroots	56
polisirreducible	4410
polresultant0	504
polresultantext	1463
polresultantext0	1575
polsym	93502
polsym_gen	110457
powi	80730491
primitive_part	2702509
primpart	161
qgcd	154
quadratic_to_RgX	420
random_FpX_monic	112
reduceddiscsmith	7
reductum_lg	891584
rescale_init	28873499
resultant	1303712
resultant2	28
resultant_fast	1303713
rnfcharpoly	224
roots_from_deg1	11654
roots_to_pol	771407
roots_to_pol_FpV	14
roots_to_pol_FqV	7
roots_to_pol_fast	771333
roots_to_pol_r1	181157
row_Q_primpart	63749
s_centermod	0
scalar_bezout	112
scalar_res	7
settype	3770184258
sturmpart	385
sturmpart_i	1148
subres_step	11790
subresext	0
subresext_i	2346
syl_RgC	371797
syl_RgM	169942
sylvestermatrix	7
triv_cont_gcd	3276
vec_Q_primpart	120972
vecprod	10003
zero_bezout	63
zero_extgcd	434
zero_gcd	8250822
zero_gcd2	8874332

Generated by: LCOV version 1.16