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 30556-bb9f5f8fc8) Lines: 1631 1787 91.3 % Date: 2025-11-25 09:20:50 Functions: 205 223 91.9 % 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_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_div_FpXQX	7
RgXn_sqrt	7
RgXn_sqrhigh	14
RgXQX_RgXQ_mul	35
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
RgXn_div_FpX	119
RgXQV_RgXQ_mul	133
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
RgXn_reverse	154
RgX_sqr_FpXQX	196
RgXn_sqr2	315
RgXQM_mul	322
RgXX_to_RgM	322
QXY_QXQ_evalx	371
RgXQ_trace	476
RgXnV_red_shallow	483
RgXn_powers	483
RgXV_maxdegree	588
zero_FpXQX_mod	616
RgX_RgXnV_eval	966
_zero	1162
RgX_homogenize_deg	1260
ZX_unscale_divpow	1393
RgX_sqr_FpX	1407
RgXQV_red	1414
QXQX_homogenous_evalpow	1652
_oneXn	1939
RgXY_swap	2051
RgX_mul_FpXQX	2079
RgXn_powu_i	2286
RgXV_rescale	2401
RgXQ_norm	2680
RgXQ_matrix_pow	2856
RgX_divs	2863
RgXV_RgV_eval	2947
QXV_QXQ_eval	3143
RgX_digits	3157
do_QXQ_eval	3514
RgXY_derivx	3836
RgX_muls	3908
_mulXn	4528
RgXn_eval	5593
RgXV_unscale	6510
QXQM_to_mod_shallow	6720
RgXQV_factorback	7118
RgM_to_RgXV_reverse	7202
QX_ZXQV_eval	7448
RgXQ_powers	8526
QXQ_powers	9324
_RgX_divrem	11333
RgX_pseudodivrem	11818
ZXQ_powers	11879
_sqrXn	11893
RgXQX_pseudodivrem	12063
RgXn_sqr	12152
QXQXV_to_mod	12677
ZX_unscale_div	12997
RgXQM_red	13195
RgX_sqr_QXQX	13411
QXQC_to_mod_shallow	14854
ZXQX_dvd	17575
RgX_homogenize	18732
QXQV_to_mod	22322
RgM_to_RgXX	23665
_gen_zero	24184
RgX_affine	29416
RgXQX_RgXQ_translate	31153
RgX_recip	31339
RgXY_swapspec	32085
QXQX_to_mod	37289
RgX_sqr_i	37961
RgX_sqrspec_basecase	38000
RgX_sqrspec	38039
RgX_normalize	39704
RgX_splitting	43631
RgX_rem_QXQX	46343
RgX_unscale	51399
RgXn_expint	52834
RgX_integXn	56137
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65030
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74121
RgXV_to_RgM	78599
_pow	88307
RgX_sqrspec_basecase_limb	100082
zero_FpX_mod	100625
RgXQ_pow	102139
_ZXQmul	110467
RgXQ_powu	120397
RgXQX_pseudorem	138127
RgX_pseudorem	138127
RgXQX_divrem	151534
RgX_mul_QXQX	164582
RgX_RgV_eval	166768
ZXQ_powu	168505
QXQ_to_mod	169194
Kronecker_to_mod	179644
RgV_to_RgX_reverse	188283
QXQX_to_mod_shallow	190317
_ZXQsqr	200294
RgX_addspec	222203
RgX_div_by_X_x	261884
_mul	278034
get_Rg_algebra	294984
RgM_to_RgXV	300473
RgX_rotate_shallow	317037
RgV_to_RgM	333863
RgX_homogenous_evalpow	398688
RgX_RgXQ_eval	408927
RgX_liftred	435261
RgXQX_red	486495
_gen_cmul	512818
RgX_addmulXn	514673
RgXn_div	584450
RgX_mul_FpX	607810
_add	609818
_gen_sqr	635534
RgXn_recip_shallow	642026
ZX_unscale	674286
_red	711366
QXQ_to_mod_shallow	777096
RgXn_inv	807480
RgX_deriv	828201
RgX_valrem_inexact	852302
gen_bkeval	872973
RgX_inflate	884915
RgXn_inv_fast	906397
RgXn_inv_i	906397
_one	999519
_cmul	1018553
rem	1044159
RgX_deflate	1162009
ZX_z_unscale	1170447
RgX_Rg_sub	1225674
RgXn_div_fast	1286750
RgXn_div_i	1286750
RgX_sqr	1296972
RgX_sqr_fast	1309124
Rg_to_RgC	1350659
RgX_shift	1578036
RgX_mulhigh_i2	1595393
RgX_mul_normalized	1702079
ZX_unscale2n	1971139
_gen_mul	1974537
RgXY_degreex	2022282
_gen_nored	2150805
RgXn_div_gen	2192936
_gen_one	2193562
RgV_to_RgX	2271247
RgX_recipspec_shallow	2582840
RgXn_mulhigh	2621326
RgX_mulhigh_i	2677479
RgX_blocks	2794521
RgX_mulXn	2997279
RgX_val	3678154
RgX_recip_i	3735814
RgX_rescale	4325446
Rg_RgX_sub	4933963
RgX_Rg_divexact	5248567
RgX_Rg_translate_basecase	5694841
RgX_Rg_translate_i	5695031
RgX_Rg_translate_fast	6056144
RgX_Rg_translate	6056145
RgXn_mul_basecase	6658643
Rg_get_0	6929066
RgX_neg	7407022
RgX_renormalize_lg	7898820
RgXn_red_shallow	7949925
RgX_addspec_shallow	8792307
RgXn_mul2	9453356
RgX_addmulXn_shallow	9461550
RgXn_mul	11102125
gen_bkeval_powers	12040061
gen_RgXQ_eval_powers	13920795
RgX_divrem	14165964
RgX_rem_fast	14461537
RgX_rem	14461545
RgX_to_RgC	14828378
brent_kung_optpow	19514418
_gen_add	19650701
RgX_divrem_i	23375237
RgX_equal	24601679
RgX_Rg_div	30700244
RgX_mulspec_basecase	34159591
RgX_mul_i	38789841
RgX_mulspec	40225834
RgX_Rg_add	42701525
RgX_even_odd	49518104
RgX_sub	72514697
RgX_valrem	80503769
RgXspec_kill0	81674287
RgX_mul	105200748
RgX_mulspec_basecase_limb	111071014
RgX_mul_fast	118980359
RgX_add	143028347
Rg_get_1	156900606
RgX_shift_shallow	176873805
RgX_Rg_mul	198889623

Generated by: LCOV version 1.16