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 30772-246cd0a587) Lines: 1660 1823 91.1 % Date: 2026-03-28 09:27:57 Functions: 209 228 91.7 % 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
RgXQX_RgXQ_mul	35
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
zero_FpXQX_mod	91
RgXn_div_FpX	98
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_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	6489
QXQM_to_mod_shallow	6720
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
RgXQX_pseudodivrem	12077
RgXn_sqr	12152
QXQXV_to_mod	12572
ZX_unscale_div	12997
RgXQM_red	13195
RgX_sqr_QXQX	13418
QXQC_to_mod_shallow	14854
RgX_sqr_FpX	16975
ZXQX_dvd	17718
RgX_homogenize	18102
QXQV_to_mod	22335
RgM_to_RgXX	23714
RgX_affine	30226
RgXY_swapspec	33145
RgX_sqr_i	33236
RgX_sqrspec_basecase	33275
RgX_sqrspec	33314
RgXQX_RgXQ_translate	33584
RgX_recip	35301
QXQX_to_mod	37211
RgX_normalize	39711
RgX_splitting	43631
RgX_rem_QXQX	49851
RgX_unscale	52068
RgXn_expint	52918
RgX_integXn	56377
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65086
RgX_mul2n	65268
RgX_rem_FpX	67781
RgXQC_red	68187
_sqr	74806
RgXV_to_RgM	79011
zero_FpX_mod	83272
_pow	88307
RgX_sqrspec_basecase_limb	94825
RgXQ_pow	102160
_ZXQmul	111182
RgXQ_powu	120407
RgXQX_pseudorem	138802
RgX_pseudorem	138802
RgX_RgV_eval	142885
RgXQX_divrem	156752
RgX_mul_QXQX	165580
QXQ_to_mod	168326
ZXQ_powu	168511
Kronecker_to_mod	180573
RgV_to_RgX_reverse	188283
_ZXQsqr	200595
QXQX_to_mod_shallow	204096
RgX_addspec	222495
RgX_Rg_sub	223121
RgX_div_by_X_x	265221
_mul	280958
get_Rg_algebra	294998
RgM_to_RgXV	302955
RgX_rotate_shallow	317037
RgV_to_RgM	336565
RgX_homogenous_evalpow	398253
RgX_RgXQ_eval	417397
RgX_liftred	444280
RgXQX_red	497516
_gen_cmul	512818
RgX_addmulXn	514965
RgXn_div	562607
RgX_mul_FpX	582113
_add	623244
_gen_sqr	635785
RgXn_recip_shallow	645795
ZX_unscale	681402
_red	724100
RgXn_inv	808300
RgX_deriv	831430
QXQ_to_mod_shallow	840695
gen_bkeval	881601
RgX_valrem_inexact	882623
RgX_inflate	885265
RgXn_inv_i	1005332
RgXn_inv_fast	1005333
_one	1019360
_cmul	1040367
rem	1050964
ZX_z_unscale	1179247
RgX_deflate	1187343
RgX_sqr	1315100
RgX_sqr_fast	1327252
Rg_to_RgC	1360426
RgXn_div_fast	1366421
RgXn_div_i	1366421
RgX_shift	1577735
RgX_mulhigh_i2	1801193
RgX_mul_normalized	1821798
Rg_get_0	1862498
_gen_mul	1975950
ZX_unscale2n	1988734
RgXY_degreex	2022622
_gen_nored	2152022
_gen_one	2194498
RgV_to_RgX	2283407
RgXn_div_gen	2371581
RgX_recipspec_shallow	2586572
RgXn_mulhigh	2848403
RgX_mulhigh_i	2904794
RgX_mulXn	2997517
RgX_blocks	3021591
RgX_recip_i	3756304
RgX_val	3984033
RgX_rescale	4352687
Rg_RgX_sub	4886668
RgX_Rg_divexact	5238319
RgX_Rg_translate_basecase	6084861
RgX_Rg_translate_i	6085052
RgX_Rg_translate	6445574
RgX_Rg_translate_fast	6445574
RgX_neg	6499854
RgXn_mul_basecase	7591743
RgX_renormalize_lg	8301657
RgXn_red_shallow	8301967
RgX_addspec_shallow	9061902
RgX_addmulXn_shallow	9743490
RgXn_mul2	10559969
gen_bkeval_powers	12124448
RgXn_mul	12219933
gen_RgXQ_eval_powers	14041823
RgX_divrem	14181681
RgX_rem_fast	14658167
RgX_rem	14658176
RgX_to_RgC	15214979
brent_kung_optpow	19613892
_gen_add	19676886
RgX_divrem_i	23448179
RgX_equal	24796480
RgX_Rg_add	26293266
RgX_Rg_div	29550015
RgX_mul_i	32814978
RgX_mulspec_basecase	33611190
RgX_mulspec	34251850
RgX_coeff_div	36713933
RgX_even_odd	49868241
RgX_mul	68827833
RgX_sub	69099456
RgX_valrem	80796417
RgXspec_kill0	82438985
RgX_mul_fast	83952555
RgX_mulspec_basecase_limb	113558357
RgX_coeff_simplify	113649825
RgX_add	117554074
Rg_get_1	156751316
RgX_shift_shallow	175828484
RgX_Rg_mul	236276481
RgX_coeff_sub	247173757
RgX_coeff_add	441091503
RgX_coeff_mul	727545077

Generated by: LCOV version 1.16