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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 90.5 % 1808 1636 Test Date: 2026-09-24 17:04:29 Functions: 91.2 % 226 206 Legend: Lines:     hit not hit

Function Name	Hit count
Kronecker_to_mod	208631
QXQC_to_mod_shallow	15540
QXQM_to_mod_shallow	7063
QXQV_to_mod	24050
QXQXV_to_mod	12572
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37212
QXQX_to_mod_shallow	204376
QXQ_powers	9506
QXQ_to_mod	172056
QXQ_to_mod_shallow	844496
QXV_QXQ_eval	3248
QXY_QXQ_evalx	294
QX_ZXQV_eval	7455
RgM_to_RgXV	303978
RgM_to_RgXV_reverse	7203
RgM_to_RgXX	23940
RgV_to_RgM	337243
RgV_to_RgX	2307694
RgV_to_RgX_reverse	186648
RgXQC_red	69559
RgXQM_mul	322
RgXQM_red	13881
RgXQV_RgXQ_mul	168
RgXQV_factorback	7119
RgXQV_red	1449
RgXQX_RgXQ_mul	105
RgXQX_RgXQ_translate	33584
RgXQX_divrem	157103
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12196
RgXQX_pseudorem	138803
RgXQX_red	550678
RgXQX_sqr	0
RgXQ_matrix_pow	2933
RgXQ_norm	2659
RgXQ_pow	102410
RgXQ_powers	8603
RgXQ_powu	120624
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79004
RgXV_unscale	6489
RgXX_to_RgM	322
RgXY_degreex	2023236
RgXY_derivx	3864
RgXY_swap	5495
RgXY_swapspec	35649
RgX_RgV_eval	142885
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417648
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42986295
RgX_Rg_add_shallow	65099
RgX_Rg_div	30836581
RgX_Rg_divexact	5316305
RgX_Rg_eval_bk	0
RgX_Rg_mul	200076157
RgX_Rg_sub	1229823
RgX_Rg_translate	6584434
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	6223119
RgX_Rg_translate_fast	6584434
RgX_Rg_translate_i	6223308
RgX_add	144428248
RgX_addmulXn	515112
RgX_addmulXn_shallow	9803832
RgX_addspec	222642
RgX_addspec_shallow	9120527
RgX_affine	31857
RgX_blocks	3107650
RgX_deflate	1171388
RgX_deriv	835072
RgX_derivn	833
RgX_digits	3234
RgX_div_by_X_x	268489
RgX_divrem	14190623
RgX_divrem_i	23464901
RgX_divs	2863
RgX_equal	25063325
RgX_even_odd	49934610
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_derivn	6552
RgX_homogenous_eval	72667
RgX_homogenous_evalpow	642228
RgX_inflate	906175
RgX_integXn	56378
RgX_liftred	496784
RgX_mul	106937757
RgX_mul2n	163044
RgX_mulXn	2997594
RgX_mul_FpX	590359
RgX_mul_FpXQX	1792
RgX_mul_QXQX	190103
RgX_mul_fast	122574641
RgX_mul_i	39507605
RgX_mul_normalized	1847104
RgX_mulhigh_i	2991092
RgX_mulhigh_i2	1887209
RgX_muls	3985
RgX_mulspec	40944989
RgX_mulspec_basecase	34877828
RgX_mulspec_basecase_limb	116523024
RgX_neg	7557951
RgX_normalize	39816
RgX_pseudodivrem	11832
RgX_pseudorem	138803
RgX_recip	35245
RgX_recip_i	3762518
RgX_recip_shallow	59388
RgX_recipspec_shallow	2598192
RgX_rem	15067926
RgX_rem_FpX	68285
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	15067926
RgX_renormalize_lg	8232837
RgX_rescale	4356006
RgX_rotate_shallow	0
RgX_shift	1577805
RgX_shift_shallow	178337746
RgX_splitting	13853
RgX_sqr	1481801
RgX_sqr_FpX	17059
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	16876
RgX_sqr_fast	1493953
RgX_sqr_i	38094
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	38172
RgX_sqrspec_basecase	38133
RgX_sqrspec_basecase_limb	100481
RgX_sub	73525232
RgX_to_RgC	15495766
RgX_unscale	54345
RgX_val	4098816
RgX_valrem	80945478
RgX_valrem_inexact	900765
RgXnV_red_shallow	483
RgXn_div	579911
RgXn_div_FpX	98
RgXn_div_FpXQX	0
RgXn_div_fast	1416946
RgXn_div_gen	2423249
RgXn_div_i	1416946
RgXn_eval	5747
RgXn_exp	0
RgXn_expint	52920
RgXn_inv	808269
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	1006492
RgXn_inv_i	1006492
RgXn_mul	12645792
RgXn_mul2	10985058
RgXn_mul_basecase	7866119
RgXn_mulhigh	2934700
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	657301
RgXn_red_shallow	8445522
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	85526027
Rg_RgX_sub	4968699
Rg_get_0	6943087
Rg_get_1	157133292
Rg_to_RgC	1363209
ZXQX_dvd	19970
ZXQ_powers	12061
ZXQ_powu	168517
ZX_unscale	697343
ZX_unscale2n	2014147
ZX_unscale_div	12999
ZX_unscale_divpow	1393
ZX_z_unscale	1195239
_RgX_divrem	11809
_RgX_mul	0
_ZXQmul	111182
_ZXQsqr	200601
_add	623534
_cmul	1040923
_gen_add	25712814
_gen_cmul	512818
_gen_mul	2075226
_gen_nored	2225529
_gen_one	2267963
_gen_sqr	668151
_gen_sub	0
_gen_zero	301
_mul	281224
_mulXn	4528
_one	1019941
_oneXn	1939
_pow	88333
_red	724507
_sqr	75046
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19714254
do_QXQ_eval	3542
gen_RgXQ_eval_powers	14152987
gen_bkeval	885116
gen_bkeval_powers	12158854
get_Rg_algebra	297601
rem	1056566
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	329
zero_FpX_mod	89831

Generated by: LCOV version 2.0-1