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 30862-ea47bd413c) Lines: 2279 2522 90.4 %
Date: 2026-05-05 09:26:54 Functions: 215 225 95.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by 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 168
RgV_type2 203
gc_gcdext 217
rnfcharpoly 224
FE_matconcat 252
RgXQ_factor 252
RgXQ_factor_i 252
RgXY_factor 252
RgXY_squff 252
RgX_Frobenius_deflate 259
RgXY_factor_squarefree 280
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 427
gcdext0 427
zero_extgcd 434
ok_bloc 455
Qi_normal 469
RgX_gcd_FpXk 490
R_to_Q_down 525
R_to_Q_up 525
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
gcdmonome 1925
isinexactall 2170
subresext_i 2360
RgX_gcd_ZXQX 2471
FlxqV_factorback 2499
cont_gcd_gen 2635
padic_gcd 2726
glcm0 2898
RgX_gcd_QXQX 3066
c_is_rational 3255
triv_cont_gcd 3276
glcm 3297
ZV_lcm 3577
must_negate 4375
RgX_extgcd_fast 4529
poldisc0 4721
RgX_extgcd 4970
gcd3 6390
RgX_cmbf 6643
_lcmii 8145
vecprod 10878
RgX_liftred 11074
RgX_is_irred 11165
RgX_is_irred_i 11165
polisirreducible 11165
inexact 11396
subres_step 11804
RgXQ_inv_FpXQ 12054
RgXQ_charpoly 12911
RgXQ_charpoly_fast 12911
ZX_content 13146
Q_factor_limit 13791
RgX_factor 13839
Q_factor 21624
ginvmod 35231
RgX_rescale_to_int 37485
factor0 59434
row_Q_primpart 63763
factor 63816
roots_from_deg1 63896
factor_domain 64516
Flv_factorback 108623
RgX_gcd_FpX 108927
polsym 114226
vec_Q_primpart 121077
RgX_disc 125967
RgX_disc_fast 125967
polsym_gen 131644
RgXQ_inv 135272
RgXQ_inv_fast 135272
Lazard 137738
deg1_from_roots 159079
RgX_resultant_sylvester 169914
RgX_sylvestermatrix 169914
syl_RgM 169921
Fppow 244859
roots_to_pol_r1 264533
RgX_pseudodenom 271486
RgXQ_mul_FpXQ 274309
Lazard2 298237
RgX_neg_i 298237
nextSousResultant 298237
RgX_resultant_all 304577
syl_RgC 371755
RgXQ_sqr 466713
RgXQ_sqr_fast 466713
Q_div_to_int 516414
cont_gcd_rfrac 846105
RgM_type 856650
reductum_lg 891892
RgX_Rg_mul_i 893828
roots_to_pol_fast 910379
roots_to_pol 910453
RgV_type 910463
normalized_to_RgX 1174874
RgXQ_charpoly_i 1228686
resultant 1400731
resultant_fast 1400731
init_resultant 1400760
factorback 1477160
RgXQ_mul 1542842
RgXQ_mul_fast 1542842
RgX_type3 1542843
cont_gcd_pol 1652102
cont_gcd_pol_i 1652102
Q_content 1837254
normalized_mul 1854557
primitive_part 2066311
Z_content_v 2381947
cont_gcd 2500821
RgX_type 2749659
Q_denom 4108395
RgM_rescale_to_int 4711094
ggcd0 5219142
RgX_Rg_type 6581842
RgM_type2 7675408
zero_gcd 8170857
zero_gcd2 8783404
FpV_factorback 9009471
RgX_gcd 9328987
RgX_gcd_fast 9328987
Q_primpart 10033525
Z_content 10258785
Q_divq_to_int 11034235
RgX_type_decode 11223233
centermod 11247010
Q_divmuli_to_int 12378900
gcdiq 12975039
centermod_i 14764094
gdivexact 23993845
factorback2 25471263
ggcd 26935091
gcdqq 29029818
rescale_init 30089039
Fpmul 30233077
choosesubtype 31379466
RgM_RgC_type 33494610
gen_factorback 34828636
RgM_settype 49701573
mul 55744586
Q_denom_v 55806197
Q_remove_denom 57328559
content 71282439
powi 80752285
Q_primitive_part 88709496
centermodii 89936042
RgX_type2 113083814
Q_muli_to_int 144893840
RgX_type_is_composite 158769257
Rg_type 167168184
Q_divi_to_int 174950102
Q_content_v 180778152
Q_denom_safe 253170039
RgC_settype 273811218
choosetype 333515033
RgX_settype 463674458
Q_gcd 1014793549
Q_content_safe 1285906004
settype 3607710026

Generated by: LCOV version 1.16