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 30532-0c728fd268) Lines: 1633 1787 91.4 %
Date: 2025-10-24 09:22:31 Functions: 205 223 91.9 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
Kronecker_to_mod 185965
QXQC_to_mod_shallow 14854
QXQM_to_mod_shallow 6720
QXQV_to_mod 22341
QXQXV_to_mod 12733
QXQX_homogenous_evalpow 1652
QXQX_to_mod 37471
QXQX_to_mod_shallow 204096
QXQ_powers 9590
QXQ_to_mod 169939
QXQ_to_mod_shallow 840695
QXV_QXQ_eval 3241
QXY_QXQ_evalx 371
QX_ZXQV_eval 7595
RgM_to_RgXV 303243
RgM_to_RgXV_reverse 7202
RgM_to_RgXX 23686
RgV_to_RgM 336733
RgV_to_RgX 2289009
RgV_to_RgX_reverse 188283
RgXQC_red 68187
RgXQM_mul 322
RgXQM_red 13195
RgXQV_RgXQ_mul 133
RgXQV_factorback 7118
RgXQV_red 1414
RgXQX_RgXQ_mul 35
RgXQX_RgXQ_translate 33584
RgXQX_divrem 156857
RgXQX_mul 0
RgXQX_powers 0
RgXQX_pseudodivrem 12063
RgXQX_pseudorem 138871
RgXQX_red 508139
RgXQX_sqr 0
RgXQ_matrix_pow 2940
RgXQ_norm 2680
RgXQ_pow 102160
RgXQ_powers 8610
RgXQ_powu 120487
RgXQ_trace 476
RgXV_RgV_eval 2947
RgXV_maxdegree 588
RgXV_prod 0
RgXV_rescale 2401
RgXV_to_RgM 79032
RgXV_unscale 6559
RgXX_to_RgM 322
RgXY_degreex 2022624
RgXY_derivx 3836
RgXY_swap 2051
RgXY_swapspec 32769
RgX_RgV_eval 166768
RgX_RgXQV_eval 0
RgX_RgXQ_eval 417516
RgX_RgXnV_eval 966
RgX_RgXn_eval 0
RgX_Rg_add 42746417
RgX_Rg_add_shallow 65099
RgX_Rg_div 30729630
RgX_Rg_divexact 5262329
RgX_Rg_eval_bk 0
RgX_Rg_mul 199288853
RgX_Rg_sub 1226085
RgX_Rg_translate 6065270
RgX_Rg_translate_FpX 0
RgX_Rg_translate_FpXQX 7
RgX_Rg_translate_basecase 5703525
RgX_Rg_translate_fast 6065269
RgX_Rg_translate_i 5703717
RgX_add 143426761
RgX_addmulXn 514864
RgX_addmulXn_shallow 9527401
RgX_addspec 222394
RgX_addspec_shallow 8851679
RgX_affine 30212
RgX_blocks 2788512
RgX_deflate 1187992
RgX_deriv 830969
RgX_digits 3157
RgX_div_by_X_x 265487
RgX_divrem 14181316
RgX_divrem_i 23433821
RgX_divs 2863
RgX_equal 24796885
RgX_even_odd 49767237
RgX_homogenize 18732
RgX_homogenize_deg 1260
RgX_homogenous_evalpow 398888
RgX_inflate 885417
RgX_integXn 56377
RgX_liftred 454903
RgX_mul 105469842
RgX_mul2n 65268
RgX_mulXn 2997279
RgX_mul_FpX 609812
RgX_mul_FpXQX 2079
RgX_mul_QXQX 170888
RgX_mul_fast 119208804
RgX_mul_i 38838046
RgX_mul_normalized 1719194
RgX_mulhigh_i 2671216
RgX_mulhigh_i2 1589510
RgX_muls 3992
RgX_mulspec 40274596
RgX_mulspec_basecase 34208270
RgX_mulspec_basecase_limb 111266432
RgX_neg 7451405
RgX_normalize 39711
RgX_pseudodivrem 11818
RgX_pseudorem 138871
RgX_recip 31423
RgX_recip_i 3751542
RgX_recip_shallow 59388
RgX_recipspec_shallow 2583813
RgX_rem 14700925
RgX_rem_FpX 68327
RgX_rem_FpXQX 70
RgX_rem_QXQX 49851
RgX_rem_fast 14700920
RgX_renormalize_lg 7886719
RgX_rescale 4344856
RgX_rotate_shallow 317037
RgX_shift 1578036
RgX_shift_shallow 177397061
RgX_splitting 43631
RgX_sqr 1299188
RgX_sqr_FpX 1407
RgX_sqr_FpXQX 196
RgX_sqr_QXQX 13425
RgX_sqr_fast 1311340
RgX_sqr_i 37961
RgX_sqrhigh_i 0
RgX_sqrhigh_i2 0
RgX_sqrspec 38039
RgX_sqrspec_basecase 38000
RgX_sqrspec_basecase_limb 100082
RgX_sub 72855246
RgX_to_RgC 15067461
RgX_unscale 51885
RgX_val 3667912
RgX_valrem 80755390
RgX_valrem_inexact 852371
RgXnV_red_shallow 483
RgXn_div 584450
RgXn_div_FpX 119
RgXn_div_FpXQX 7
RgXn_div_fast 1284113
RgXn_div_gen 2189143
RgXn_div_i 1284113
RgXn_eval 5187
RgXn_exp 0
RgXn_expint 52919
RgXn_inv 807480
RgXn_inv_FpX 91
RgXn_inv_FpXQX 0
RgXn_inv_fast 905244
RgXn_inv_i 905246
RgXn_mul 11067742
RgXn_mul2 9420016
RgXn_mul_basecase 6633454
RgXn_mulhigh 2614827
RgXn_powers 483
RgXn_powu 0
RgXn_powu_i 2286
RgXn_recip_shallow 643055
RgXn_red_shallow 7944223
RgXn_reverse 154
RgXn_sqr 12152
RgXn_sqr2 315
RgXn_sqr_basecase 0
RgXn_sqrhigh 14
RgXn_sqrt 7
RgXspec_kill0 81721210
Rg_RgX_sub 4954789
Rg_get_0 6942982
Rg_get_1 156956993
Rg_to_RgC 1360866
ZXQX_dvd 17734
ZXQ_powers 12145
ZXQ_powu 168507
ZX_unscale 674286
ZX_unscale2n 1974170
ZX_unscale_div 12997
ZX_unscale_divpow 1393
ZX_z_unscale 1171635
_RgX_divrem 11333
_RgX_mul 0
_ZXQmul 111195
_ZXQsqr 200601
_add 623387
_cmul 1040640
_gen_add 19655601
_gen_cmul 512818
_gen_mul 1974713
_gen_nored 2150825
_gen_one 2193816
_gen_sqr 635491
_gen_sub 0
_gen_zero 24184
_mul 281000
_mulXn 4528
_one 1019728
_oneXn 1939
_pow 88307
_red 724299
_sqr 74881
_sqrXn 11893
_sub 0
_zero 1232
_zeroXn 0
brent_kung_optpow 19600066
do_QXQ_eval 3612
gen_RgXQ_eval_powers 14036984
gen_bkeval 881588
gen_bkeval_powers 12144707
get_Rg_algebra 294967
rem 1050979
rfrac_deflate 140
rfrac_deflate_max 140
rfrac_deflate_order 140
zero_FpXQX_mod 616
zero_FpX_mod 102627

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