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 30531-d68fd7cb7d) Lines: 1631 1787 91.3 %
Date: 2025-10-15 09:22:51 Functions: 205 223 91.9 %
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_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_div_FpXQX 7
RgXn_sqrt 7
RgXn_sqrhigh 14
RgXQX_RgXQ_mul 35
RgX_rem_FpXQX 70
RgXn_inv_FpX 91
RgXn_div_FpX 119
RgXQV_RgXQ_mul 133
rfrac_deflate 140
rfrac_deflate_max 140
rfrac_deflate_order 140
RgXn_reverse 154
RgX_sqr_FpXQX 196
RgXn_sqr2 315
RgXQM_mul 322
RgXX_to_RgM 322
QXY_QXQ_evalx 371
RgXQ_trace 476
RgXnV_red_shallow 483
RgXn_powers 483
RgXV_maxdegree 588
zero_FpXQX_mod 616
RgX_RgXnV_eval 966
_zero 1232
RgX_homogenize_deg 1260
ZX_unscale_divpow 1393
RgX_sqr_FpX 1407
RgXQV_red 1414
QXQX_homogenous_evalpow 1652
_oneXn 1939
RgXY_swap 2051
RgX_mul_FpXQX 2079
RgXn_powu_i 2286
RgXV_rescale 2401
RgXQ_norm 2680
RgX_divs 2863
RgXQ_matrix_pow 2940
RgXV_RgV_eval 2947
RgX_digits 3157
QXV_QXQ_eval 3241
do_QXQ_eval 3612
RgXY_derivx 3836
RgX_muls 3992
_mulXn 4528
RgXn_eval 5187
RgXV_unscale 6558
QXQM_to_mod_shallow 6720
RgXQV_factorback 7118
RgM_to_RgXV_reverse 7202
QX_ZXQV_eval 7595
RgXQ_powers 8610
QXQ_powers 9590
_RgX_divrem 11333
RgX_pseudodivrem 11818
_sqrXn 11893
RgXQX_pseudodivrem 12063
ZXQ_powers 12145
RgXn_sqr 12152
QXQXV_to_mod 12733
ZX_unscale_div 12997
RgXQM_red 13195
RgX_sqr_QXQX 13425
QXQC_to_mod_shallow 14854
ZXQX_dvd 17734
RgX_homogenize 18732
QXQV_to_mod 22343
RgM_to_RgXX 23686
_gen_zero 24184
RgX_affine 30212
RgX_recip 31423
RgXY_swapspec 32769
RgXQX_RgXQ_translate 33584
QXQX_to_mod 37471
RgX_sqr_i 37961
RgX_sqrspec_basecase 38000
RgX_sqrspec 38039
RgX_normalize 39711
RgX_splitting 43631
RgX_rem_QXQX 49851
RgX_unscale 51888
RgXn_expint 52918
RgX_integXn 56374
RgX_recip_shallow 59388
RgX_Rg_add_shallow 65100
RgX_mul2n 65268
RgXQC_red 68187
RgX_rem_FpX 68327
_sqr 74877
RgXV_to_RgM 79032
_pow 88307
RgX_sqrspec_basecase_limb 100082
RgXQ_pow 102160
zero_FpX_mod 102627
_ZXQmul 111196
RgXQ_powu 120509
RgXQX_pseudorem 138872
RgX_pseudorem 138872
RgXQX_divrem 156857
RgX_RgV_eval 166768
ZXQ_powu 168510
QXQ_to_mod 169946
RgX_mul_QXQX 170888
Kronecker_to_mod 185965
RgV_to_RgX_reverse 188283
_ZXQsqr 200608
QXQX_to_mod_shallow 204096
RgX_addspec 222393
RgX_div_by_X_x 265485
_mul 281006
get_Rg_algebra 294993
RgM_to_RgXV 303247
RgX_rotate_shallow 317037
RgV_to_RgM 336721
RgX_homogenous_evalpow 398864
RgX_RgXQ_eval 417515
RgX_liftred 454903
RgXQX_red 508139
_gen_cmul 512818
RgX_addmulXn 514863
RgXn_div 584450
RgX_mul_FpX 609812
_add 623384
_gen_sqr 635522
RgXn_recip_shallow 643061
ZX_unscale 674286
_red 724303
RgXn_inv 807483
RgX_deriv 830952
QXQ_to_mod_shallow 840695
RgX_valrem_inexact 852371
gen_bkeval 881661
RgX_inflate 885451
RgXn_inv_fast 905251
RgXn_inv_i 905251
_one 1019736
_cmul 1040634
rem 1050976
ZX_z_unscale 1171634
RgX_deflate 1187996
RgX_Rg_sub 1226093
RgXn_div_fast 1284113
RgXn_div_i 1284113
RgX_sqr 1299165
RgX_sqr_fast 1311318
Rg_to_RgC 1360763
RgX_shift 1578036
RgX_mulhigh_i2 1589510
RgX_mul_normalized 1719188
ZX_unscale2n 1974147
_gen_mul 1974472
RgXY_degreex 2022601
_gen_nored 2150743
RgXn_div_gen 2189145
_gen_one 2193608
RgV_to_RgX 2289079
RgX_recipspec_shallow 2583972
RgXn_mulhigh 2614827
RgX_mulhigh_i 2671217
RgX_blocks 2788512
RgX_mulXn 2997279
RgX_val 3667912
RgX_recip_i 3751725
RgX_rescale 4344736
Rg_RgX_sub 4954659
RgX_Rg_divexact 5262732
RgX_Rg_translate_basecase 5703416
RgX_Rg_translate_i 5703603
RgX_Rg_translate_fast 6065163
RgX_Rg_translate 6065166
RgXn_mul_basecase 6633454
Rg_get_0 6942982
RgX_neg 7451359
RgX_renormalize_lg 7886719
RgXn_red_shallow 7944222
RgX_addspec_shallow 8851672
RgXn_mul2 9420016
RgX_addmulXn_shallow 9527364
RgXn_mul 11067743
gen_bkeval_powers 12145410
gen_RgXQ_eval_powers 14037861
RgX_divrem 14181245
RgX_rem_fast 14700703
RgX_rem 14700707
RgX_to_RgC 15067473
brent_kung_optpow 19597250
_gen_add 19652383
RgX_divrem_i 23433534
RgX_equal 24796871
RgX_Rg_div 30729696
RgX_mulspec_basecase 34208026
RgX_mul_i 38837836
RgX_mulspec 40274384
RgX_Rg_add 42746340
RgX_even_odd 49764848
RgX_sub 72853427
RgX_valrem 80753306
RgXspec_kill0 81720772
RgX_mul 105469622
RgX_mulspec_basecase_limb 111266010
RgX_mul_fast 119208595
RgX_add 143427067
Rg_get_1 156956994
RgX_shift_shallow 177392259
RgX_Rg_mul 199289105

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