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 30773-2078653b96) Lines: 1660 1823 91.1 % Date: 2026-04-02 09:26:53 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	17720
RgX_homogenize	18102
QXQV_to_mod	22342
RgM_to_RgXX	23714
RgX_affine	30226
RgXY_swapspec	33147
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	52067
RgXn_expint	52914
RgX_integXn	56371
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65085
RgX_mul2n	65268
RgX_rem_FpX	67781
RgXQC_red	68187
_sqr	74807
RgXV_to_RgM	79011
zero_FpX_mod	83272
_pow	88307
RgX_sqrspec_basecase_limb	94825
RgXQ_pow	102160
_ZXQmul	111179
RgXQ_powu	120406
RgXQX_pseudorem	138801
RgX_pseudorem	138801
RgX_RgV_eval	142885
RgXQX_divrem	156752
RgX_mul_QXQX	165568
QXQ_to_mod	168329
ZXQ_powu	168500
Kronecker_to_mod	180561
RgV_to_RgX_reverse	188283
_ZXQsqr	200586
QXQX_to_mod_shallow	204096
RgX_addspec	222462
RgX_Rg_sub	223136
RgX_div_by_X_x	265223
_mul	280959
get_Rg_algebra	294955
RgM_to_RgXV	302969
RgX_rotate_shallow	317037
RgV_to_RgM	336555
RgX_homogenous_evalpow	398293
RgX_RgXQ_eval	417401
RgX_liftred	444256
RgXQX_red	497492
_gen_cmul	512818
RgX_addmulXn	514932
RgXn_div	562607
RgX_mul_FpX	582113
_add	623231
_gen_sqr	635549
RgXn_recip_shallow	645778
ZX_unscale	681402
_red	724099
RgXn_inv	808300
RgX_deriv	831444
QXQ_to_mod_shallow	840695
gen_bkeval	881487
RgX_valrem_inexact	882625
RgX_inflate	885234
RgXn_inv_fast	1005335
RgXn_inv_i	1005335
_one	1019353
_cmul	1040371
rem	1050960
ZX_z_unscale	1179242
RgX_deflate	1187359
RgX_sqr	1315153
RgX_sqr_fast	1327306
Rg_to_RgC	1360351
RgXn_div_fast	1366421
RgXn_div_i	1366421
RgX_shift	1577735
RgX_mulhigh_i2	1801193
RgX_mul_normalized	1821788
Rg_get_0	1862498
_gen_mul	1974282
ZX_unscale2n	1988851
RgXY_degreex	2022718
_gen_nored	2150155
_gen_one	2192935
RgV_to_RgX	2283408
RgXn_div_gen	2371574
RgX_recipspec_shallow	2586392
RgXn_mulhigh	2848403
RgX_mulhigh_i	2904788
RgX_mulXn	2997517
RgX_blocks	3021591
RgX_recip_i	3756188
RgX_val	3984033
RgX_rescale	4352816
Rg_RgX_sub	4886681
RgX_Rg_divexact	5238384
RgX_Rg_translate_basecase	6085018
RgX_Rg_translate_i	6085206
RgX_Rg_translate	6445720
RgX_Rg_translate_fast	6445720
RgX_neg	6500160
RgXn_mul_basecase	7591743
RgX_renormalize_lg	8301656
RgXn_red_shallow	8301957
RgX_addspec_shallow	9062176
RgX_addmulXn_shallow	9743822
RgXn_mul2	10559969
gen_bkeval_powers	12121355
RgXn_mul	12219925
gen_RgXQ_eval_powers	14037073
RgX_divrem	14181739
RgX_rem_fast	14658178
RgX_rem	14658183
RgX_to_RgC	15214689
brent_kung_optpow	19611557
_gen_add	19650911
RgX_divrem_i	23448330
RgX_equal	24796458
RgX_Rg_add	26293440
RgX_Rg_div	29550120
RgX_mul_i	32815065
RgX_mulspec_basecase	33611202
RgX_mulspec	34251839
RgX_coeff_div	36714405
RgX_even_odd	49870059
RgX_mul	68827954
RgX_sub	69098267
RgX_valrem	80784427
RgXspec_kill0	82439009
RgX_mul_fast	83952667
RgX_mulspec_basecase_limb	113558045
RgX_coeff_simplify	113648095
RgX_add	117554293
Rg_get_1	156751296
RgX_shift_shallow	175806519
RgX_Rg_mul	236277366
RgX_coeff_sub	247081589
RgX_coeff_add	441069953
RgX_coeff_mul	727506193

Generated by: LCOV version 1.16