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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 30849-48ff4d246c) Lines: 1681 1844 91.2 % Date: 2026-05-01 09:26:53 Functions: 212 231 91.8 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	202058
QXQC_to_mod_shallow	15540
QXQM_to_mod_shallow	7063
QXQV_to_mod	23565
QXQXV_to_mod	12572
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37212
QXQX_to_mod_shallow	204369
QXQ_powers	9506
QXQ_to_mod	170695
QXQ_to_mod_shallow	844475
QXV_QXQ_eval	3248
QXY_QXQ_evalx	294
QX_ZXQV_eval	7455
RgM_to_RgXV	302975
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23919
RgV_to_RgM	336569
RgV_to_RgX	2284917
RgV_to_RgX_reverse	188283
RgXQC_red	69559
RgXQM_mul	322
RgXQM_red	13881
RgXQV_RgXQ_mul	168
RgXQV_factorback	7118
RgXQV_red	1449
RgXQX_RgXQ_mul	119
RgXQX_RgXQ_translate	33584
RgXQX_divrem	157080
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12175
RgXQX_pseudorem	138802
RgXQX_red	537959
RgXQX_sqr	0
RgXQ_matrix_pow	2933
RgXQ_norm	2659
RgXQ_pow	102384
RgXQ_powers	8603
RgXQ_powu	120414
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79010
RgXV_unscale	6488
RgXX_to_RgM	322
RgXY_degreex	2022692
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	33149
RgX_RgV_eval	142885
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417393
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	26333183
RgX_Rg_add_shallow	65085
RgX_Rg_div	29645794
RgX_Rg_divexact	5237387
RgX_Rg_eval_bk	0
RgX_Rg_mul	236879377
RgX_Rg_sub	223127
RgX_Rg_translate	6446085
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	6085351
RgX_Rg_translate_fast	6446084
RgX_Rg_translate_i	6085540
RgX_add	118123791
RgX_addmulXn	514946
RgX_addmulXn_shallow	9744113
RgX_addspec	222476
RgX_addspec_shallow	9062490
RgX_affine	30226
RgX_blocks	3021626
RgX_coeff_add	441966477
RgX_coeff_div	36980145
RgX_coeff_mul	728603364
RgX_coeff_simplify	113649567
RgX_coeff_sub	247344162
RgX_deflate	1188556
RgX_deriv	834903
RgX_derivn	798
RgX_digits	3234
RgX_div_by_X_x	265491
RgX_divrem	14185537
RgX_divrem_i	23452238
RgX_divs	2863
RgX_equal	25055602
RgX_even_odd	49865297
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_derivn	6741
RgX_homogenous_eval	72743
RgX_homogenous_evalpow	637961
RgX_inflate	886541
RgX_integXn	56375
RgX_liftred	484065
RgX_mul	69375999
RgX_mul2n	162700
RgX_mulXn	2997517
RgX_mul_FpX	582113
RgX_mul_FpXQX	1477
RgX_mul_QXQX	183880
RgX_mul_fast	84500835
RgX_mul_i	32815363
RgX_mul_normalized	1821944
RgX_mulhigh_i	2904827
RgX_mulhigh_i2	1801193
RgX_muls	3985
RgX_mulspec	34252174
RgX_mulspec_basecase	33611547
RgX_mulspec_basecase_limb	113560028
RgX_neg	6528100
RgX_normalize	39711
RgX_pseudodivrem	11832
RgX_pseudorem	138802
RgX_recip	35301
RgX_recip_i	3756743
RgX_recip_shallow	59388
RgX_recipspec_shallow	2592111
RgX_rem	15007476
RgX_rem_FpX	67781
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	15007469
RgX_renormalize_lg	8301728
RgX_rescale	4352904
RgX_rotate_shallow	317037
RgX_shift	1577735
RgX_shift_shallow	175805459
RgX_splitting	43631
RgX_sqr	1472449
RgX_sqr_FpX	16975
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	16603
RgX_sqr_fast	1484601
RgX_sqr_i	33236
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	33314
RgX_sqrspec_basecase	33275
RgX_sqrspec_basecase_limb	94825
RgX_sub	69249905
RgX_to_RgC	15456294
RgX_unscale	52063
RgX_val	3984110
RgX_valrem	80780856
RgX_valrem_inexact	882779
RgXnV_red_shallow	483
RgXn_div	562607
RgXn_div_FpX	98
RgXn_div_FpXQX	0
RgXn_div_fast	1366421
RgXn_div_gen	2371594
RgXn_div_i	1366421
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52919
RgXn_inv	808302
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	1005351
RgXn_inv_i	1005351
RgXn_mul	12220000
RgXn_mul2	10559976
RgXn_mul_basecase	7591743
RgXn_mulhigh	2848438
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	651590
RgXn_red_shallow	8302005
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	82439708
Rg_RgX_sub	4886769
Rg_get_0	1862568
Rg_get_1	156905274
Rg_to_RgC	1360437
ZXQX_dvd	18302
ZXQ_powers	12061
ZXQ_powu	168508
ZX_unscale	681444
ZX_unscale2n	1988837
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1179294
_RgX_divrem	11809
_RgX_mul	0
_ZXQmul	111180
_ZXQsqr	200592
_add	623232
_cmul	1040360
_gen_add	19653387
_gen_cmul	512818
_gen_mul	1975179
_gen_nored	2151417
_gen_one	2194047
_gen_sqr	635788
_gen_sub	0
_gen_zero	301
_mul	281182
_mulXn	4528
_one	1019351
_oneXn	1939
_pow	88307
_red	724090
_sqr	75201
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19626161
do_QXQ_eval	3542
gen_RgXQ_eval_powers	14036632
gen_bkeval	881514
gen_bkeval_powers	12120453
get_Rg_algebra	295005
rem	1057277
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	91
zero_FpX_mod	83272

Generated by: LCOV version 1.16