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 30813-28f64e5615) Lines: 1681 1844 91.2 %
Date: 2026-04-14 09:26:12 Functions: 212 231 91.8 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
RgXQX_mul 0
RgXQX_powers 0
RgXQX_sqr 0
RgXV_prod 0
RgX_RgXQV_eval 0
RgX_RgXn_eval 0
RgX_Rg_eval_bk 0
RgX_Rg_translate_FpX 0
RgX_sqrhigh_i 0
RgX_sqrhigh_i2 0
RgXn_div_FpXQX 0
RgXn_exp 0
RgXn_inv_FpXQX 0
RgXn_powu 0
RgXn_sqr_basecase 0
_RgX_mul 0
_gen_sub 0
_sub 0
_zeroXn 0
RgX_Rg_translate_FpXQX 7
RgXn_sqrt 7
RgXn_sqrhigh 14
RgXQX_RgXQ_mul 35
RgX_rem_FpXQX 70
RgXn_inv_FpX 91
zero_FpXQX_mod 91
RgXn_div_FpX 98
rfrac_deflate 140
rfrac_deflate_max 140
rfrac_deflate_order 140
RgXn_reverse 154
RgXQV_RgXQ_mul 168
RgX_sqr_FpXQX 196
QXY_QXQ_evalx 294
_gen_zero 301
RgXn_sqr2 315
RgXQM_mul 322
RgXX_to_RgM 322
RgXQ_trace 476
RgXnV_red_shallow 483
RgXn_powers 483
RgXV_maxdegree 588
RgX_derivn 798
RgX_RgXnV_eval 966
_zero 1232
RgX_homogenize_deg 1260
ZX_unscale_divpow 1393
RgXQV_red 1449
RgX_mul_FpXQX 1477
QXQX_homogenous_evalpow 1652
_oneXn 1939
RgXY_swap 2051
RgXn_powu_i 2286
RgXV_rescale 2401
RgXQ_norm 2659
RgX_divs 2863
RgXQ_matrix_pow 2933
RgXV_RgV_eval 2947
RgX_digits 3234
QXV_QXQ_eval 3248
do_QXQ_eval 3542
RgX_homogenous_derivn 3773
RgXY_derivx 3836
RgX_muls 3985
_mulXn 4528
RgXn_eval 5593
RgXV_unscale 6489
QXQM_to_mod_shallow 6720
RgXQV_factorback 7118
RgM_to_RgXV_reverse 7202
QX_ZXQV_eval 7455
RgXQ_powers 8603
QXQ_powers 9506
_RgX_divrem 11809
RgX_pseudodivrem 11832
_sqrXn 11893
ZXQ_powers 12061
RgXQX_pseudodivrem 12077
RgXn_sqr 12152
QXQXV_to_mod 12572
ZX_unscale_div 12997
RgXQM_red 13195
RgX_sqr_QXQX 13418
QXQC_to_mod_shallow 14854
RgX_sqr_FpX 16975
ZXQX_dvd 17720
RgX_homogenize 18102
QXQV_to_mod 22342
RgM_to_RgXX 23714
RgX_affine 30226
RgXY_swapspec 33147
RgX_sqr_i 33236
RgX_sqrspec_basecase 33275
RgX_sqrspec 33314
RgXQX_RgXQ_translate 33584
RgX_recip 35301
QXQX_to_mod 37212
RgX_normalize 39711
RgX_splitting 43631
RgX_rem_QXQX 49851
RgX_unscale 52067
RgXn_expint 52917
RgX_integXn 56376
RgX_recip_shallow 59388
RgX_Rg_add_shallow 65081
RgX_rem_FpX 67781
RgXQC_red 68187
RgX_homogenous_eval 70342
_sqr 74805
RgXV_to_RgM 79011
zero_FpX_mod 83272
_pow 88307
RgX_sqrspec_basecase_limb 94825
RgXQ_pow 102160
_ZXQmul 111182
RgXQ_powu 120400
RgXQX_pseudorem 138801
RgX_pseudorem 138801
RgX_RgV_eval 142885
RgXQX_divrem 156752
RgX_mul2n 161412
RgX_mul_QXQX 165580
QXQ_to_mod 168329
ZXQ_powu 168508
Kronecker_to_mod 180573
RgV_to_RgX_reverse 188283
_ZXQsqr 200596
QXQX_to_mod_shallow 204096
RgX_addspec 222495
RgX_Rg_sub 223133
RgX_div_by_X_x 265223
_mul 280960
get_Rg_algebra 294965
RgM_to_RgXV 302952
RgX_rotate_shallow 317037
RgV_to_RgM 336548
RgX_RgXQ_eval 417400
RgX_liftred 444280
RgXQX_red 497516
_gen_cmul 512818
RgX_addmulXn 514965
RgXn_div 562607
RgX_mul_FpX 582113
_add 623236
RgX_homogenous_evalpow 634271
_gen_sqr 635678
RgXn_recip_shallow 649014
ZX_unscale 681402
_red 724105
RgXn_inv 808298
RgX_deriv 832662
QXQ_to_mod_shallow 840695
gen_bkeval 881442
RgX_valrem_inexact 882625
RgX_inflate 885205
RgXn_inv_fast 1005342
RgXn_inv_i 1005343
_one 1019360
_cmul 1040363
rem 1050952
ZX_z_unscale 1179240
RgX_deflate 1187353
Rg_to_RgC 1360328
RgXn_div_fast 1366421
RgXn_div_i 1366421
RgX_sqr 1462943
RgX_sqr_fast 1475095
RgX_shift 1577735
RgX_mulhigh_i2 1801193
RgX_mul_normalized 1821782
Rg_get_0 1862498
_gen_mul 1974329
ZX_unscale2n 1988749
RgXY_degreex 2022667
_gen_nored 2150207
_gen_one 2193295
RgV_to_RgX 2283347
RgXn_div_gen 2371573
RgX_recipspec_shallow 2589475
RgXn_mulhigh 2848403
RgX_mulhigh_i 2904793
RgX_mulXn 2997517
RgX_blocks 3021591
RgX_recip_i 3755864
RgX_val 3984033
RgX_rescale 4352644
Rg_RgX_sub 4886615
RgX_Rg_divexact 5238213
RgX_Rg_translate_basecase 6085036
RgX_Rg_translate_i 6085227
RgX_Rg_translate_fast 6445785
RgX_Rg_translate 6445788
RgX_neg 6522294
RgXn_mul_basecase 7591743
RgX_renormalize_lg 8301658
RgXn_red_shallow 8301965
RgX_addspec_shallow 9061792
RgX_addmulXn_shallow 9743339
RgXn_mul2 10559969
gen_bkeval_powers 12119484
RgXn_mul 12219929
gen_RgXQ_eval_powers 14035326
RgX_divrem 14183768
RgX_rem_fast 14658073
RgX_rem 14658086
RgX_to_RgC 15350857
brent_kung_optpow 19607920
_gen_add 19646062
RgX_divrem_i 23450174
RgX_equal 24796472
RgX_Rg_add 26294747
RgX_Rg_div 29639154
RgX_mul_i 32814934
RgX_mulspec_basecase 33611142
RgX_mulspec 34251802
RgX_coeff_div 36973236
RgX_even_odd 49861042
RgX_sub 69189866
RgX_mul 69281953
RgX_valrem 80777976
RgXspec_kill0 82438784
RgX_mul_fast 84406695
RgX_mulspec_basecase_limb 113557272
RgX_coeff_simplify 113647052
RgX_add 118045253
Rg_get_1 156855512
RgX_shift_shallow 175797802
RgX_Rg_mul 236799241
RgX_coeff_sub 247304654
RgX_coeff_add 441841526
RgX_coeff_mul 728462939

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