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
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
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
zero_FpXQX_mod	91
RgXn_div_FpX	98
RgXQX_RgXQ_mul	119
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_derivn	798
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	6488
RgX_homogenous_derivn	6741
QXQM_to_mod_shallow	7063
RgXQV_factorback	7118
RgM_to_RgXV_reverse	7202
QX_ZXQV_eval	7455
RgXQ_powers	8603
QXQ_powers	9506
_RgX_divrem	11809
RgX_pseudodivrem	11832
_sqrXn	11893
ZXQ_powers	12061
RgXn_sqr	12152
RgXQX_pseudodivrem	12175
QXQXV_to_mod	12572
ZX_unscale_div	12997
RgXQM_red	13881
QXQC_to_mod_shallow	15540
RgX_sqr_QXQX	16603
RgX_sqr_FpX	16975
RgX_homogenize	18102
ZXQX_dvd	18302
QXQV_to_mod	23565
RgM_to_RgXX	23919
RgX_affine	30226
RgXY_swapspec	33149
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	52919
RgX_integXn	56375
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65085
RgX_rem_FpX	67781
RgXQC_red	69559
RgX_homogenous_eval	72743
_sqr	75201
RgXV_to_RgM	79010
zero_FpX_mod	83272
_pow	88307
RgX_sqrspec_basecase_limb	94825
RgXQ_pow	102384
_ZXQmul	111180
RgXQ_powu	120414
RgXQX_pseudorem	138802
RgX_pseudorem	138802
RgX_RgV_eval	142885
RgXQX_divrem	157080
RgX_mul2n	162700
ZXQ_powu	168508
QXQ_to_mod	170695
RgX_mul_QXQX	183880
RgV_to_RgX_reverse	188283
_ZXQsqr	200592
Kronecker_to_mod	202058
QXQX_to_mod_shallow	204369
RgX_addspec	222476
RgX_Rg_sub	223127
RgX_div_by_X_x	265491
_mul	281182
get_Rg_algebra	295005
RgM_to_RgXV	302975
RgX_rotate_shallow	317037
RgV_to_RgM	336569
RgX_RgXQ_eval	417393
RgX_liftred	484065
_gen_cmul	512818
RgX_addmulXn	514946
RgXQX_red	537959
RgXn_div	562607
RgX_mul_FpX	582113
_add	623232
_gen_sqr	635788
RgX_homogenous_evalpow	637961
RgXn_recip_shallow	651590
ZX_unscale	681444
_red	724090
RgXn_inv	808302
RgX_deriv	834903
QXQ_to_mod_shallow	844475
gen_bkeval	881514
RgX_valrem_inexact	882779
RgX_inflate	886541
RgXn_inv_fast	1005351
RgXn_inv_i	1005351
_one	1019351
_cmul	1040360
rem	1057277
ZX_z_unscale	1179294
RgX_deflate	1188556
Rg_to_RgC	1360437
RgXn_div_fast	1366421
RgXn_div_i	1366421
RgX_sqr	1472449
RgX_sqr_fast	1484601
RgX_shift	1577735
RgX_mulhigh_i2	1801193
RgX_mul_normalized	1821944
Rg_get_0	1862568
_gen_mul	1975179
ZX_unscale2n	1988837
RgXY_degreex	2022692
_gen_nored	2151417
_gen_one	2194047
RgV_to_RgX	2284917
RgXn_div_gen	2371594
RgX_recipspec_shallow	2592111
RgXn_mulhigh	2848438
RgX_mulhigh_i	2904827
RgX_mulXn	2997517
RgX_blocks	3021626
RgX_recip_i	3756743
RgX_val	3984110
RgX_rescale	4352904
Rg_RgX_sub	4886769
RgX_Rg_divexact	5237387
RgX_Rg_translate_basecase	6085351
RgX_Rg_translate_i	6085540
RgX_Rg_translate_fast	6446084
RgX_Rg_translate	6446085
RgX_neg	6528100
RgXn_mul_basecase	7591743
RgX_renormalize_lg	8301728
RgXn_red_shallow	8302005
RgX_addspec_shallow	9062490
RgX_addmulXn_shallow	9744113
RgXn_mul2	10559976
gen_bkeval_powers	12120453
RgXn_mul	12220000
gen_RgXQ_eval_powers	14036632
RgX_divrem	14185537
RgX_rem_fast	15007469
RgX_rem	15007476
RgX_to_RgC	15456294
brent_kung_optpow	19626161
_gen_add	19653387
RgX_divrem_i	23452238
RgX_equal	25055602
RgX_Rg_add	26333183
RgX_Rg_div	29645794
RgX_mul_i	32815363
RgX_mulspec_basecase	33611547
RgX_mulspec	34252174
RgX_coeff_div	36980145
RgX_even_odd	49865297
RgX_sub	69249905
RgX_mul	69375999
RgX_valrem	80780856
RgXspec_kill0	82439708
RgX_mul_fast	84500835
RgX_mulspec_basecase_limb	113560028
RgX_coeff_simplify	113649567
RgX_add	118123791
Rg_get_1	156905274
RgX_shift_shallow	175805459
RgX_Rg_mul	236879377
RgX_coeff_sub	247344162
RgX_coeff_add	441966477
RgX_coeff_mul	728603364

Generated by: LCOV version 1.16