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:

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 30601-812dd05845) Lines: 2271 2514 90.3 %
Date: 2026-01-06 09:22:34 Functions: 215 225 95.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
CX_factor 21
FE_matconcat 259
Flv_factorback 108623
FlxqV_factorback 2499
FpV_factorback 8575365
Fpmul 29351775
Fppow 244474
FqV_factorback 14
Lazard 137738
Lazard2 298237
Q_content 1843493
Q_content_safe 1288687875
Q_content_v 182250541
Q_denom 4105996
Q_denom_safe 252750900
Q_denom_v 55640953
Q_div_to_int 515487
Q_divi_to_int 174966574
Q_divmuli_to_int 11575376
Q_divq_to_int 10406927
Q_factor 21609
Q_factor_limit 13791
Q_gcd 1014483614
Q_mul_to_int 0
Q_muli_to_int 143615991
Q_primitive_part 90262980
Q_primpart 10081743
Q_remove_denom 57261153
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 273661281
RgM_RgC_type 33489406
RgM_rescale_to_int 4709890
RgM_settype 49667396
RgM_type 830641
RgM_type2 7673806
RgV_type 776751
RgV_type2 203
RgXQ_charpoly 12913
RgXQ_charpoly_FpXQ 14
RgXQ_charpoly_fast 12913
RgXQ_charpoly_i 1228535
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 1542237
RgXQ_mul_FpXQ 274309
RgXQ_mul_FpXQXQ 385
RgXQ_mul_fast 1542237
RgXQ_ratlift 112
RgXQ_sqr 465856
RgXQ_sqr_FpXQ 14
RgXQ_sqr_FpXQXQ 0
RgXQ_sqr_fast 465856
RgXY_factor 259
RgXY_factor_squarefree 273
RgXY_squff 259
RgX_Frobenius_deflate 343
RgX_Rg_mul_i 893827
RgX_Rg_type 6070824
RgX_chinese_coprime 0
RgX_cmbf 6475
RgX_disc 124188
RgX_disc_FpX 42
RgX_disc_FpXQX 28
RgX_disc_fast 124188
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 13832
RgX_fix_quadratic 98
RgX_gcd 10414834
RgX_gcd_FpX 111909
RgX_gcd_FpXQX 7
RgX_gcd_FpXk 595
RgX_gcd_QXQX 3003
RgX_gcd_ZXQX 2261
RgX_gcd_fast 10414834
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 271484
RgX_rescale_to_int 37485
RgX_resultant_FpX 28
RgX_resultant_FpXQX 21
RgX_resultant_all 304567
RgX_resultant_sylvester 169935
RgX_settype 661682842
RgX_sturmpart 763
RgX_sylvestermatrix 169935
RgX_type 2474638
RgX_type2 147691071
RgX_type3 1542238
RgX_type_decode 11720504
RgX_type_is_composite 163901731
Rg_type 171962005
ZV_lcm 3577
ZX_content 13146
Z_content 10259571
Z_content_v 2382060
Zi_mul3 896
Zi_rem 448
_lcmii 8145
c_is_rational 3269
c_zero_gcd 1386
caract_const 126
centermod 11242595
centermod_i 14755982
centermodii 89847726
choosesubtype 38353706
choosetype 371964042
cont_gcd 1924962
cont_gcd_gen 2635
cont_gcd_pol 1912233
cont_gcd_pol_i 1912233
cont_gcd_rfrac 10115
content 72569281
deg1_from_roots 157204
factor 62378
factor0 59403
factor_domain 63071
factorback 1476437
factorback2 25470538
fix_lcm 105
fix_pol 343
gbezout 427
gc_gcdext 217
gcd3 6390
gcdext0 427
gcdiq 12795238
gcdmonome 3717
gcdqq 28382025
gdivexact 24020480
gen_cmp_RgXY 385
gen_factorback 34391987
ggcd 27702452
ggcd0 5203644
ghalfgcd 91
ginvmod 35231
glcm 3297
glcm0 2898
inexact 11424
init_resultant 1400502
isinexactall 2198
mul 55743540
must_negate 4368
newtonpoly 28
nextSousResultant 298237
normalized_mul 1720930
normalized_to_RgX 1041167
ok_bloc 434
padic_gcd 1435
pol_approx0 0
poldisc0 4717
polfromroots 56
polisirreducible 11165
polresultant0 504
polresultantext 1463
polresultantext0 1575
polsym 114132
polsym_gen 131548
powi 80750881
primitive_part 2902199
primpart 161
qgcd 154
quadratic_to_RgX 420
random_FpX_monic 112
reduceddiscsmith 7
reductum_lg 891895
rescale_init 30077676
resultant 1400475
resultant2 28
resultant_fast 1400474
rnfcharpoly 224
roots_from_deg1 63896
roots_to_pol 776741
roots_to_pol_FpV 14
roots_to_pol_FqV 7
roots_to_pol_fast 776667
roots_to_pol_r1 264534
row_Q_primpart 63749
s_centermod 0
scalar_bezout 112
scalar_res 7
settype 3821686316
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 8258382
zero_gcd2 8879812

Generated by: LCOV version 1.16