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 30759-17b423fb9b) Lines: 1660 1823 91.1 %
Date: 2026-03-21 09:26:11 Functions: 209 228 91.7 %
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_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
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 11818
_sqrXn 11893
ZXQ_powers 12061
RgXQX_pseudodivrem 12063
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 22340
RgM_to_RgXX 23714
RgX_affine 30226
RgXY_swapspec 33143
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 52063
RgXn_expint 52920
RgX_integXn 56377
RgX_recip_shallow 59388
RgX_Rg_add_shallow 65074
RgX_mul2n 65268
RgX_rem_FpX 67781
RgXQC_red 68187
_sqr 74807
RgXV_to_RgM 79011
zero_FpX_mod 83272
_pow 88307
RgX_sqrspec_basecase_limb 94825
RgXQ_pow 102160
_ZXQmul 111182
RgXQ_powu 120414
RgXQX_pseudorem 138802
RgX_pseudorem 138802
RgX_RgV_eval 142885
RgXQX_divrem 156752
RgX_mul_QXQX 165574
QXQ_to_mod 168329
ZXQ_powu 168507
Kronecker_to_mod 180567
RgV_to_RgX_reverse 188283
_ZXQsqr 200591
QXQX_to_mod_shallow 204096
RgX_addspec 222463
RgX_Rg_sub 223065
RgX_div_by_X_x 265226
_mul 280968
get_Rg_algebra 295008
RgM_to_RgXV 302953
RgX_rotate_shallow 317037
RgV_to_RgM 336555
RgX_homogenous_evalpow 398266
RgX_RgXQ_eval 417408
RgX_liftred 444268
RgXQX_red 497504
_gen_cmul 512818
RgX_addmulXn 514933
RgXn_div 562607
RgX_mul_FpX 581889
_add 623262
_gen_sqr 635708
RgXn_recip_shallow 645792
ZX_unscale 681402
_red 724121
RgXn_inv 808298
RgX_deriv 831445
QXQ_to_mod_shallow 840695
gen_bkeval 881619
RgX_valrem_inexact 882625
RgX_inflate 885265
RgXn_inv_fast 1005337
RgXn_inv_i 1005337
_one 1019386
_cmul 1040396
rem 1050960
ZX_z_unscale 1179247
RgX_deflate 1187348
RgX_sqr 1315106
RgX_sqr_fast 1327258
Rg_to_RgC 1360364
RgXn_div_fast 1366421
RgXn_div_i 1366421
RgX_shift 1577735
RgX_mulhigh_i2 1801193
RgX_mul_normalized 1821786
Rg_get_0 1862498
_gen_mul 1975538
ZX_unscale2n 1988740
RgXY_degreex 2022592
_gen_nored 2151681
_gen_one 2194135
RgV_to_RgX 2283412
RgXn_div_gen 2371581
RgX_recipspec_shallow 2586560
RgXn_mulhigh 2848403
RgX_mulhigh_i 2904795
RgX_mulXn 2997517
RgX_blocks 3021591
RgX_recip_i 3756337
RgX_val 3984033
RgX_rescale 4352706
Rg_RgX_sub 4886583
RgX_Rg_divexact 5239511
RgX_Rg_translate_basecase 6084879
RgX_Rg_translate_i 6085034
RgX_Rg_translate 6445575
RgX_Rg_translate_fast 6445575
RgX_neg 6499846
RgXn_mul_basecase 7591743
RgX_renormalize_lg 8301661
RgXn_red_shallow 8301970
RgX_addspec_shallow 9061861
RgX_addmulXn_shallow 9743497
RgXn_mul2 10559969
gen_bkeval_powers 12123036
RgXn_mul 12219938
gen_RgXQ_eval_powers 14039921
RgX_divrem 14181212
RgX_rem_fast 14658138
RgX_rem 14658150
RgX_to_RgC 15214931
brent_kung_optpow 19613474
_gen_add 19669874
RgX_divrem_i 23447745
RgX_equal 24796176
RgX_Rg_add 26293085
RgX_Rg_div 29550029
RgX_mul_i 32814941
RgX_mulspec_basecase 33611105
RgX_mulspec 34251725
RgX_coeff_div 36714110
RgX_even_odd 49864456
RgX_mul 68827268
RgX_sub 69093893
RgX_valrem 80790760
RgXspec_kill0 82438793
RgX_mul_fast 83951997
RgX_mulspec_basecase_limb 113557884
RgX_coeff_simplify 113648850
RgX_add 117552735
Rg_get_1 156749305
RgX_shift_shallow 175812336
RgX_Rg_mul 236275099
RgX_coeff_sub 247144812
RgX_coeff_add 441077177
RgX_coeff_mul 727519395

Generated by: LCOV version 1.16