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 30316-0578a48613) Lines: 1623 1779 91.2 % Date: 2025-06-02 09:19:41 Functions: 204 222 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	186210
QXQC_to_mod_shallow	14938
QXQM_to_mod_shallow	6734
QXQV_to_mod	18355
QXQXV_to_mod	12558
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37275
QXQX_to_mod_shallow	203599
QXQ_powers	9212
QXQ_to_mod	167230
QXQ_to_mod_shallow	840415
QXV_QXQ_eval	3017
QXY_QXQ_evalx	245
QX_ZXQV_eval	6986
RgM_to_RgXV	301993
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23476
RgV_to_RgM	335623
RgV_to_RgX	1493225
RgV_to_RgX_reverse	188283
RgXQC_red	68355
RgXQM_mul	322
RgXQM_red	13223
RgXQV_RgXQ_mul	133
RgXQV_factorback	7118
RgXQV_red	1211
RgXQX_RgXQ_mul	35
RgXQX_divrem	155730
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	627354
RgXQX_red	508531
RgXQX_sqr	0
RgXQX_translate	32464
RgXQ_matrix_pow	2940
RgXQ_norm	5158
RgXQ_pow	102160
RgXQ_powers	8582
RgXQ_powu	116685
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	78555
RgXV_unscale	6237
RgXX_to_RgM	322
RgXY_degreex	1387
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32773
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417207
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	44515500
RgX_Rg_add_shallow	65069
RgX_Rg_div	30323010
RgX_Rg_divexact	7176156
RgX_Rg_eval_bk	0
RgX_Rg_mul	201363175
RgX_Rg_sub	1222865
RgX_add	144846603
RgX_addmulXn	514764
RgX_addmulXn_shallow	10066080
RgX_addspec	222294
RgX_addspec_shallow	8907817
RgX_affine	30212
RgX_blocks	2788484
RgX_deflate	1175472
RgX_deriv	825377
RgX_digits	3157
RgX_div_by_X_x	251084
RgX_divrem	14231850
RgX_divrem_i	23512690
RgX_divs	2667
RgX_equal	24895508
RgX_even_odd	49734559
RgX_homogenize	18732
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	668292
RgX_inflate	881933
RgX_integXn	56375
RgX_liftred	455393
RgX_mul	107410851
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	171133
RgX_mul_fast	121144022
RgX_mul_i	38830487
RgX_mul_normalized	1719099
RgX_mulhigh_i	2671191
RgX_mulhigh_i2	1589510
RgX_muls	3992
RgX_mulspec	40266795
RgX_mulspec_basecase	34200563
RgX_mulspec_basecase_limb	111059151
RgX_neg	8820244
RgX_normalize	39130
RgX_pseudodivrem	11818
RgX_pseudorem	627354
RgX_recip	31388
RgX_recip_i	5112038
RgX_recip_shallow	59388
RgX_recipspec_shallow	2583610
RgX_rem	14704934
RgX_rem_FpX	68320
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14704927
RgX_renormalize_lg	7886613
RgX_rescale	4342395
RgX_rotate_shallow	317037
RgX_shift	1578036
RgX_shift_shallow	175564475
RgX_splitting	43631
RgX_sqr	1372213
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1384365
RgX_sqr_i	37961
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	38039
RgX_sqrspec_basecase	38000
RgX_sqrspec_basecase_limb	100082
RgX_sub	72801318
RgX_to_RgC	13410486
RgX_translate	6063375
RgX_translate_FpX	0
RgX_translate_basecase	5701765
RgX_translate_fast	6063373
RgX_translate_i	5701955
RgX_unscale	51507
RgX_val	3667905
RgX_valrem	80768590
RgX_valrem_inexact	852070
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1284113
RgXn_div_gen	2188985
RgXn_div_i	1284113
RgXn_eval	5187
RgXn_exp	0
RgXn_expint	52918
RgXn_inv	807479
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	905087
RgXn_inv_i	905087
RgXn_mul	11061990
RgXn_mul2	9414549
RgXn_mul_basecase	6627987
RgXn_mulhigh	2614799
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	642781
RgXn_red_shallow	7944002
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	81694911
Rg_RgX_sub	4951711
Rg_get_0	6942919
Rg_get_1	156948601
Rg_to_RgC	1355816
ZXQX_dvd	17342
ZXQ_powers	11767
ZXQ_powu	168510
ZX_unscale	1013197
ZX_unscale2n	923874
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1467269
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	111175
_ZXQsqr	200581
_add	623063
_cmul	1040013
_gen_add	19242041
_gen_cmul	512818
_gen_mul	1839824
_gen_nored	2027628
_gen_one	2068716
_gen_sqr	591663
_gen_sub	0
_gen_zero	24184
_mul	276633
_mulXn	4528
_one	1018697
_oneXn	1939
_pow	88307
_red	723969
_sqr	67310
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19439770
do_QXQ_eval	3262
gen_RgXQ_eval_powers	14562167
gen_bkeval	874012
gen_bkeval_powers	12468488
get_Rg_algebra	281039
rem	4042126
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	616
zero_FpX_mod	102627

Generated by: LCOV version 1.16