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 30773-2078653b96)	Lines:	2279	2522	90.4 %
Date:	2026-04-03 09:26:58	Functions:	215	225	95.6 %
Legend:	Lines: hit not hit


Function Name	Hit count
CX_factor	21
FE_matconcat	252
Flv_factorback	108623
FlxqV_factorback	2499
FpV_factorback	8723332
Fpmul	29573013
Fppow	244859
FqV_factorback	14
Lazard	137739
Lazard2	298237
Q_content	1837233
Q_content_safe	1283612903
Q_content_v	180137983
Q_denom	4106417
Q_denom_safe	252814235
Q_denom_v	55657633
Q_div_to_int	515600
Q_divi_to_int	174468029
Q_divmuli_to_int	11985943
Q_divq_to_int	10628097
Q_factor	21609
Q_factor_limit	13792
Q_gcd	1013669008
Q_mul_to_int	0
Q_muli_to_int	143822137
Q_primitive_part	88158225
Q_primpart	10022561
Q_remove_denom	57274866
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	273724069
RgM_RgC_type	33484386
RgM_rescale_to_int	4709393
RgM_settype	49662913
RgM_type	830929
RgM_type2	7673963
RgV_type	877588
RgV_type2	203
RgXQ_charpoly	12907
RgXQ_charpoly_FpXQ	14
RgXQ_charpoly_fast	12907
RgXQ_charpoly_i	1228750
RgXQ_factor	252
RgXQ_factor_i	252
RgXQ_inv	135272
RgXQ_inv_FpXQ	12054
RgXQ_inv_FpXQXQ	7
RgXQ_inv_fast	135272
RgXQ_inv_i	862
RgXQ_mul	1542626
RgXQ_mul_FpXQ	274309
RgXQ_mul_FpXQXQ	385
RgXQ_mul_fast	1542626
RgXQ_ratlift	112
RgXQ_sqr	465870
RgXQ_sqr_FpXQ	14
RgXQ_sqr_FpXQXQ	0
RgXQ_sqr_fast	465870
RgXY_factor	252
RgXY_factor_squarefree	280
RgXY_squff	252
RgX_Frobenius_deflate	259
RgX_Rg_mul_i	893828
RgX_Rg_type	6445903
RgX_chinese_coprime	0
RgX_cmbf	6643
RgX_disc	125953
RgX_disc_FpX	42
RgX_disc_FpXQX	28
RgX_disc_fast	125953
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	13839
RgX_fix_quadratic	98
RgX_gcd	9328031
RgX_gcd_FpX	108927
RgX_gcd_FpXQX	7
RgX_gcd_FpXk	490
RgX_gcd_QXQX	3003
RgX_gcd_ZXQX	2261
RgX_gcd_fast	9328031
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	11165
RgX_is_irred_i	11165
RgX_liftred	10528
RgX_neg_i	298237
RgX_pseudodenom	271488
RgX_rescale_to_int	37485
RgX_resultant_FpX	28
RgX_resultant_FpXQX	21
RgX_resultant_all	304620
RgX_resultant_sylvester	169914
RgX_settype	459380170
RgX_sturmpart	763
RgX_sylvestermatrix	169914
RgX_type	2591265
RgX_type2	111336359
RgX_type3	1542626
RgX_type_decode	11220090
RgX_type_is_composite	158613803
Rg_type	166620815
ZV_lcm	3577
ZX_content	13146
Z_content	10259011
Z_content_v	2382010
Zi_mul3	854
Zi_rem	427
_lcmii	8145
c_is_rational	3255
c_zero_gcd	1400
caract_const	126
centermod	11243695
centermod_i	14758180
centermodii	89900458
choosesubtype	31379533
choosetype	330855058
cont_gcd	2500821
cont_gcd_gen	2635
cont_gcd_pol	1652102
cont_gcd_pol_i	1652102
cont_gcd_rfrac	846105
content	71280003
deg1_from_roots	157225
factor	63802
factor0	59434
factor_domain	64502
factorback	1477146
factorback2	25471246
fix_lcm	105
fix_pol	343
gbezout	427
gc_gcdext	217
gcd3	6390
gcdext0	427
gcdiq	12867681
gcdmonome	1925
gcdqq	28515072
gdivexact	24003307
gen_cmp_RgXY	399
gen_factorback	34540670
ggcd	26934300
ggcd0	5219142
ghalfgcd	91
ginvmod	35231
glcm	3297
glcm0	2898
inexact	11396
init_resultant	1400822
isinexactall	2170
mul	55744589
must_negate	4375
newtonpoly	28
nextSousResultant	298237
normalized_mul	1821779
normalized_to_RgX	1141999
ok_bloc	455
padic_gcd	2726
pol_approx0	0
poldisc0	4721
polfromroots	56
polisirreducible	11165
polresultant0	637
polresultantext	1463
polresultantext0	1575
polsym	114188
polsym_gen	131604
powi	80752279
primitive_part	2066237
primpart	168
qgcd	154
quadratic_to_RgX	420
random_FpX_monic	119
reduceddiscsmith	7
reductum_lg	891896
rescale_init	30082333
resultant	1400793
resultant2	28
resultant_fast	1400794
rnfcharpoly	224
roots_from_deg1	63895
roots_to_pol	877578
roots_to_pol_FpV	14
roots_to_pol_FqV	7
roots_to_pol_fast	877504
roots_to_pol_r1	264528
row_Q_primpart	63763
s_centermod	0
scalar_bezout	112
scalar_res	7
settype	3599362555
sturmpart	385
sturmpart_i	1148
subres_step	11804
subresext	0
subresext_i	2360
syl_RgC	371755
syl_RgM	169921
sylvestermatrix	7
triv_cont_gcd	3276
vec_Q_primpart	121077
vecprod	10878
zero_bezout	63
zero_extgcd	434
zero_gcd	8170597
zero_gcd2	8783354

Generated by: LCOV version 1.16