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 30571-c0dfe82732) Lines: 1631 1787 91.3 %
Date: 2025-12-07 09:22:06 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 2947
RgXV_RgV_eval 2947
RgX_digits 3157
QXV_QXQ_eval 3248
do_QXQ_eval 3619
RgXY_derivx 3836
RgX_muls 3999
_mulXn 4528
RgXn_eval 5593
RgXV_unscale 6558
QXQM_to_mod_shallow 6720
RgXQV_factorback 7118
RgM_to_RgXV_reverse 7202
QX_ZXQV_eval 7637
RgXQ_powers 8617
QXQ_powers 9611
_RgX_divrem 11333
RgX_pseudodivrem 11818
_sqrXn 11893
RgXQX_pseudodivrem 12063
RgXn_sqr 12152
ZXQ_powers 12166
QXQXV_to_mod 12740
ZX_unscale_div 12997
RgXQM_red 13195
RgX_sqr_QXQX 13425
QXQC_to_mod_shallow 14854
ZXQX_dvd 17732
RgX_homogenize 18732
QXQV_to_mod 22338
RgM_to_RgXX 23686
_gen_zero 24184
RgX_affine 30226
RgX_recip 31437
RgXY_swapspec 32771
RgXQX_RgXQ_translate 33584
QXQX_to_mod 37485
RgX_sqr_i 37961
RgX_sqrspec_basecase 38000
RgX_sqrspec 38039
RgX_normalize 39711
RgX_splitting 43631
RgX_rem_QXQX 49851
RgX_unscale 52303
RgXn_expint 52933
RgX_integXn 56405
RgX_recip_shallow 59388
RgX_Rg_add_shallow 65113
RgX_mul2n 65268
RgXQC_red 68187
RgX_rem_FpX 68327
_sqr 74889
RgXV_to_RgM 79053
_pow 88307
RgX_sqrspec_basecase_limb 100082
RgXQ_pow 102160
zero_FpX_mod 102627
_ZXQmul 111224
RgXQ_powu 120510
RgXQX_pseudorem 138879
RgX_pseudorem 138879
RgXQX_divrem 156864
RgX_RgV_eval 166768
ZXQ_powu 168509
QXQ_to_mod 169988
RgX_mul_QXQX 170902
Kronecker_to_mod 185979
RgV_to_RgX_reverse 188283
_ZXQsqr 200634
QXQX_to_mod_shallow 204096
RgX_addspec 222394
RgX_div_by_X_x 265560
_mul 281042
get_Rg_algebra 294989
RgM_to_RgXV 303303
RgX_rotate_shallow 317037
RgV_to_RgM 336793
RgX_homogenous_evalpow 398881
RgX_RgXQ_eval 417575
RgX_liftred 454931
RgXQX_red 508167
_gen_cmul 512818
RgX_addmulXn 514864
RgXn_div 584450
RgX_mul_FpX 609812
_add 623490
_gen_sqr 635432
RgXn_recip_shallow 642796
ZX_unscale 674286
_red 724419
RgXn_inv 807482
RgX_deriv 830976
QXQ_to_mod_shallow 840695
RgX_valrem_inexact 852375
gen_bkeval 881747
RgX_inflate 885490
RgXn_inv_fast 906394
RgXn_inv_i 906395
_one 1019910
_cmul 1040801
rem 1050982
ZX_z_unscale 1171650
RgX_deflate 1188153
RgX_Rg_sub 1226083
RgXn_div_fast 1286750
RgXn_div_i 1286750
RgX_sqr 1299190
RgX_sqr_fast 1311341
Rg_to_RgC 1361046
RgX_shift 1578036
RgX_mulhigh_i2 1595393
RgX_mul_normalized 1721120
ZX_unscale2n 1974164
_gen_mul 1974502
RgXY_degreex 2022638
_gen_nored 2150897
RgXn_div_gen 2192929
_gen_one 2193581
RgV_to_RgX 2289496
RgX_recipspec_shallow 2583823
RgXn_mulhigh 2621494
RgX_mulhigh_i 2677911
RgX_blocks 2794689
RgX_mulXn 2997279
RgX_val 3678154
RgX_recip_i 3751786
RgX_rescale 4344741
Rg_RgX_sub 4954532
RgX_Rg_divexact 5262533
RgX_Rg_translate_basecase 5710291
RgX_Rg_translate_i 5710484
RgX_Rg_translate_fast 6072042
RgX_Rg_translate 6072045
RgXn_mul_basecase 6658643
Rg_get_0 6942982
RgX_neg 7451815
RgX_renormalize_lg 7899156
RgXn_red_shallow 7950683
RgX_addspec_shallow 8855421
RgXn_mul2 9453356
RgX_addmulXn_shallow 9531189
RgXn_mul 11102996
gen_bkeval_powers 12145461
gen_RgXQ_eval_powers 14038446
RgX_divrem 14181209
RgX_rem_fast 14700566
RgX_rem 14700582
RgX_to_RgC 15070800
brent_kung_optpow 19613375
_gen_add 19654193
RgX_divrem_i 23433314
RgX_equal 24799549
RgX_Rg_div 30731799
RgX_mulspec_basecase 34221574
RgX_mul_i 38851406
RgX_mulspec 40288004
RgX_Rg_add 42746521
RgX_even_odd 49765664
RgX_sub 72859200
RgX_valrem 80756276
RgXspec_kill0 81798219
RgX_mul 105485765
RgX_mulspec_basecase_limb 111360761
RgX_mul_fast 119266673
RgX_add 143439704
Rg_get_1 156959592
RgX_shift_shallow 177403368
RgX_Rg_mul 199297034

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