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 - RgX.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30734-f1f26dedcb) Lines: 1660 1823 91.1 %
Date: 2026-03-05 09:24:39 Functions: 209 228 91.7 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Kronecker_to_mod 180567
QXQC_to_mod_shallow 14854
QXQM_to_mod_shallow 6720
QXQV_to_mod 22336
QXQXV_to_mod 12572
QXQX_homogenous_evalpow 1652
QXQX_to_mod 37212
QXQX_to_mod_shallow 204096
QXQ_powers 9506
QXQ_to_mod 168329
QXQ_to_mod_shallow 840695
QXV_QXQ_eval 3248
QXY_QXQ_evalx 294
QX_ZXQV_eval 7455
RgM_to_RgXV 302962
RgM_to_RgXV_reverse 7202
RgM_to_RgXX 23714
RgV_to_RgM 336566
RgV_to_RgX 2280926
RgV_to_RgX_reverse 188283
RgXQC_red 68187
RgXQM_mul 322
RgXQM_red 13195
RgXQV_RgXQ_mul 168
RgXQV_factorback 7118
RgXQV_red 1449
RgXQX_RgXQ_mul 35
RgXQX_RgXQ_translate 33584
RgXQX_divrem 156752
RgXQX_mul 0
RgXQX_powers 0
RgXQX_pseudodivrem 11923
RgXQX_pseudorem 138802
RgXQX_red 497504
RgXQX_sqr 0
RgXQ_matrix_pow 2933
RgXQ_norm 2659
RgXQ_pow 102160
RgXQ_powers 8603
RgXQ_powu 120402
RgXQ_trace 476
RgXV_RgV_eval 2947
RgXV_maxdegree 588
RgXV_prod 0
RgXV_rescale 2401
RgXV_to_RgM 79011
RgXV_unscale 6489
RgXX_to_RgM 322
RgXY_degreex 2022490
RgXY_derivx 3836
RgXY_swap 2051
RgXY_swapspec 30873
RgX_RgV_eval 142885
RgX_RgXQV_eval 0
RgX_RgXQ_eval 417398
RgX_RgXnV_eval 966
RgX_RgXn_eval 0
RgX_Rg_add 26288304
RgX_Rg_add_shallow 65078
RgX_Rg_div 29549860
RgX_Rg_divexact 5229543
RgX_Rg_eval_bk 0
RgX_Rg_mul 236179999
RgX_Rg_sub 223072
RgX_Rg_translate 6070344
RgX_Rg_translate_FpX 0
RgX_Rg_translate_FpXQX 7
RgX_Rg_translate_basecase 5709629
RgX_Rg_translate_fast 6070343
RgX_Rg_translate_i 5709815
RgX_add 117233071
RgX_addmulXn 514965
RgX_addmulXn_shallow 9532715
RgX_addspec 222495
RgX_addspec_shallow 8856816
RgX_affine 30226
RgX_blocks 2742515
RgX_coeff_add 440812752
RgX_coeff_div 36713042
RgX_coeff_mul 727135567
RgX_coeff_simplify 109633980
RgX_coeff_sub 246188664
RgX_deflate 1186160
RgX_deriv 826851
RgX_digits 3234
RgX_div_by_X_x 265229
RgX_divrem 14175869
RgX_divrem_i 23430264
RgX_divs 2863
RgX_equal 24795893
RgX_even_odd 49786014
RgX_homogenize 18102
RgX_homogenize_deg 1260
RgX_homogenous_evalpow 395478
RgX_inflate 884740
RgX_integXn 56376
RgX_liftred 444268
RgX_mul 68212030
RgX_mul2n 65268
RgX_mulXn 2997489
RgX_mul_FpX 581889
RgX_mul_FpXQX 1477
RgX_mul_QXQX 165574
RgX_mul_fast 81760903
RgX_mul_i 32349112
RgX_mul_normalized 1720977
RgX_mulhigh_i 2626139
RgX_mulhigh_i2 1595393
RgX_muls 3985
RgX_mulspec 33786018
RgX_mulspec_basecase 33146859
RgX_mulspec_basecase_limb 109542961
RgX_neg 6490508
RgX_normalize 39711
RgX_pseudodivrem 11678
RgX_pseudorem 138802
RgX_recip 30541
RgX_recip_i 3751130
RgX_recip_shallow 59388
RgX_recipspec_shallow 2583152
RgX_rem 14645889
RgX_rem_FpX 67781
RgX_rem_FpXQX 70
RgX_rem_QXQX 49851
RgX_rem_fast 14645820
RgX_renormalize_lg 7740079
RgX_rescale 4346008
RgX_rotate_shallow 314657
RgX_shift 1577707
RgX_shift_shallow 175069462
RgX_splitting 43421
RgX_sqr 1293723
RgX_sqr_FpX 1323
RgX_sqr_FpXQX 196
RgX_sqr_QXQX 13418
RgX_sqr_fast 1305875
RgX_sqr_i 33236
RgX_sqrhigh_i 0
RgX_sqrhigh_i2 0
RgX_sqrspec 33314
RgX_sqrspec_basecase 33275
RgX_sqrspec_basecase_limb 94825
RgX_sub 68730579
RgX_to_RgC 15053204
RgX_unscale 52068
RgX_val 3667633
RgX_valrem 80712829
RgX_valrem_inexact 852175
RgXnV_red_shallow 483
RgXn_div 532507
RgXn_div_FpX 98
RgXn_div_FpXQX 0
RgXn_div_fast 1234821
RgXn_div_gen 2141046
RgXn_div_i 1234821
RgXn_eval 5593
RgXn_exp 0
RgXn_expint 52920
RgXn_inv 807485
RgXn_inv_FpX 91
RgXn_inv_FpXQX 0
RgXn_inv_fast 906414
RgXn_inv_i 906414
RgXn_mul 10922723
RgXn_mul2 9379769
RgXn_mul_basecase 6658643
RgXn_mulhigh 2569747
RgXn_powers 483
RgXn_powu 0
RgXn_powu_i 2286
RgXn_recip_shallow 642593
RgXn_red_shallow 7847367
RgXn_reverse 154
RgXn_sqr 12152
RgXn_sqr2 315
RgXn_sqr_basecase 0
RgXn_sqrhigh 14
RgXn_sqrt 7
RgXspec_kill0 79644134
Rg_RgX_sub 4880158
Rg_get_0 1862498
Rg_get_1 156745062
Rg_to_RgC 1360429
ZXQX_dvd 17720
ZXQ_powers 12061
ZXQ_powu 168511
ZX_unscale 674724
ZX_unscale2n 1975192
ZX_unscale_div 12997
ZX_unscale_divpow 1393
ZX_z_unscale 1172566
_RgX_divrem 11809
_RgX_mul 0
_ZXQmul 111182
_ZXQsqr 200596
_add 623237
_cmul 1040373
_gen_add 19683788
_gen_cmul 512818
_gen_mul 1975969
_gen_nored 2152044
_gen_one 2194690
_gen_sqr 635827
_gen_sub 0
_gen_zero 301
_mul 280955
_mulXn 4528
_one 1019358
_oneXn 1939
_pow 88307
_red 724105
_sqr 74806
_sqrXn 11893
_sub 0
_zero 1232
_zeroXn 0
brent_kung_optpow 19614604
do_QXQ_eval 3542
gen_RgXQ_eval_powers 14040298
gen_bkeval 881537
gen_bkeval_powers 12122700
get_Rg_algebra 295005
rem 1050127
rfrac_deflate 140
rfrac_deflate_max 140
rfrac_deflate_order 140
zero_FpXQX_mod 91
zero_FpX_mod 82656

Generated by: LCOV version 1.16