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 30851-7844d7b3a5) Lines: 1681 1844 91.2 % Date: 2026-05-02 09:26:58 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	6489
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	18303
QXQV_to_mod	23567
RgM_to_RgXX	23919
RgX_affine	30226
RgXY_swapspec	33139
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	52918
RgX_integXn	56377
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65087
RgX_rem_FpX	67781
RgXQC_red	69559
RgX_homogenous_eval	72743
_sqr	75198
RgXV_to_RgM	79011
zero_FpX_mod	83272
_pow	88307
RgX_sqrspec_basecase_limb	94825
RgXQ_pow	102384
_ZXQmul	111180
RgXQ_powu	120412
RgXQX_pseudorem	138803
RgX_pseudorem	138803
RgX_RgV_eval	142885
RgXQX_divrem	157081
RgX_mul2n	162700
ZXQ_powu	168511
QXQ_to_mod	170695
RgX_mul_QXQX	183880
RgV_to_RgX_reverse	188283
_ZXQsqr	200591
Kronecker_to_mod	202058
QXQX_to_mod_shallow	204369
RgX_addspec	222476
RgX_Rg_sub	223136
RgX_div_by_X_x	265493
_mul	281189
get_Rg_algebra	295001
RgM_to_RgXV	302971
RgX_rotate_shallow	317037
RgV_to_RgM	336569
RgX_RgXQ_eval	417397
RgX_liftred	484065
_gen_cmul	512818
RgX_addmulXn	514946
RgXQX_red	537959
RgXn_div	562607
RgX_mul_FpX	582113
_add	623233
_gen_sqr	635737
RgX_homogenous_evalpow	638040
RgXn_recip_shallow	651597
ZX_unscale	681444
_red	724107
RgXn_inv	808305
RgX_deriv	834914
QXQ_to_mod_shallow	844475
gen_bkeval	881526
RgX_valrem_inexact	882779
RgX_inflate	886549
RgXn_inv_fast	1005359
RgXn_inv_i	1005359
_one	1019356
_cmul	1040367
rem	1057281
ZX_z_unscale	1179297
RgX_deflate	1188548
Rg_to_RgC	1360452
RgXn_div_fast	1366421
RgXn_div_i	1366421
RgX_sqr	1472534
RgX_sqr_fast	1484686
RgX_shift	1577735
RgX_mulhigh_i2	1801193
RgX_mul_normalized	1821951
Rg_get_0	1862568
_gen_mul	1975094
ZX_unscale2n	1988906
RgXY_degreex	2022641
_gen_nored	2151274
_gen_one	2193919
RgV_to_RgX	2284891
RgXn_div_gen	2371595
RgX_recipspec_shallow	2592186
RgXn_mulhigh	2848438
RgX_mulhigh_i	2904828
RgX_mulXn	2997517
RgX_blocks	3021626
RgX_recip_i	3756934
RgX_val	3984110
RgX_rescale	4352991
Rg_RgX_sub	4886864
RgX_Rg_divexact	5237527
RgX_Rg_translate_basecase	6085449
RgX_Rg_translate_i	6085644
RgX_Rg_translate_fast	6446202
RgX_Rg_translate	6446203
RgX_neg	6528197
RgXn_mul_basecase	7591743
RgX_renormalize_lg	8301730
RgXn_red_shallow	8302008
RgX_addspec_shallow	9062610
RgX_addmulXn_shallow	9744313
RgXn_mul2	10559976
gen_bkeval_powers	12120599
RgXn_mul	12220008
gen_RgXQ_eval_powers	14037431
RgX_divrem	14185583
RgX_rem_fast	15007612
RgX_rem	15007630
RgX_to_RgC	15456212
brent_kung_optpow	19625753
_gen_add	19651793
RgX_divrem_i	23452469
RgX_equal	25055584
RgX_Rg_add	26333229
RgX_Rg_div	29645805
RgX_mul_i	32815582
RgX_mulspec_basecase	33611789
RgX_mulspec	34252415
RgX_coeff_div	36980340
RgX_even_odd	49866317
RgX_sub	69250451
RgX_mul	69376239
RgX_valrem	80782474
RgXspec_kill0	82440157
RgX_mul_fast	84501091
RgX_mulspec_basecase_limb	113560613
RgX_coeff_simplify	113650411
RgX_add	118123883
Rg_get_1	156905276
RgX_shift_shallow	175808435
RgX_Rg_mul	236880235
RgX_coeff_sub	247347124
RgX_coeff_add	441970530
RgX_coeff_mul	728612688

Generated by: LCOV version 1.16