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 30568-0d72d66ef5) Lines: 1631 1787 91.3 % Date: 2025-12-01 09:22:22 Functions: 205 223 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	185979
QXQC_to_mod_shallow	14854
QXQM_to_mod_shallow	6720
QXQV_to_mod	22339
QXQXV_to_mod	12740
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37485
QXQX_to_mod_shallow	204096
QXQ_powers	9611
QXQ_to_mod	169988
QXQ_to_mod_shallow	840695
QXV_QXQ_eval	3248
QXY_QXQ_evalx	371
QX_ZXQV_eval	7637
RgM_to_RgXV	303300
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23686
RgV_to_RgM	336795
RgV_to_RgX	2289509
RgV_to_RgX_reverse	188283
RgXQC_red	68187
RgXQM_mul	322
RgXQM_red	13195
RgXQV_RgXQ_mul	133
RgXQV_factorback	7118
RgXQV_red	1414
RgXQX_RgXQ_mul	35
RgXQX_RgXQ_translate	33584
RgXQX_divrem	156864
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138880
RgXQX_red	508167
RgXQX_sqr	0
RgXQ_matrix_pow	2947
RgXQ_norm	2680
RgXQ_pow	102160
RgXQ_powers	8617
RgXQ_powu	120490
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79053
RgXV_unscale	6559
RgXX_to_RgM	322
RgXY_degreex	2022638
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32769
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417570
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42746556
RgX_Rg_add_shallow	65115
RgX_Rg_div	30731808
RgX_Rg_divexact	5262787
RgX_Rg_eval_bk	0
RgX_Rg_mul	199297463
RgX_Rg_sub	1226095
RgX_Rg_translate	6072216
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5710458
RgX_Rg_translate_fast	6072215
RgX_Rg_translate_i	5710648
RgX_add	143440072
RgX_addmulXn	514863
RgX_addmulXn_shallow	9531633
RgX_addspec	222393
RgX_addspec_shallow	8855789
RgX_affine	30226
RgX_blocks	2794689
RgX_deflate	1188150
RgX_deriv	830999
RgX_digits	3157
RgX_div_by_X_x	265570
RgX_divrem	14181352
RgX_divrem_i	23433932
RgX_divs	2863
RgX_equal	24799536
RgX_even_odd	49765106
RgX_homogenize	18732
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	398892
RgX_inflate	885483
RgX_integXn	56405
RgX_liftred	454931
RgX_mul	105486244
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	170902
RgX_mul_fast	119267172
RgX_mul_i	38851884
RgX_mul_normalized	1721119
RgX_mulhigh_i	2677914
RgX_mulhigh_i2	1595393
RgX_muls	3999
RgX_mulspec	40288484
RgX_mulspec_basecase	34222060
RgX_mulspec_basecase_limb	111362392
RgX_neg	7451976
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138880
RgX_recip	31437
RgX_recip_i	3751917
RgX_recip_shallow	59388
RgX_recipspec_shallow	2583790
RgX_rem	14701098
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14701088
RgX_renormalize_lg	7899157
RgX_rescale	4344889
RgX_rotate_shallow	317037
RgX_shift	1578036
RgX_shift_shallow	177402346
RgX_splitting	43631
RgX_sqr	1299203
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1311355
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	72859154
RgX_to_RgC	15070966
RgX_unscale	52310
RgX_val	3678154
RgX_valrem	80757745
RgX_valrem_inexact	852378
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1286750
RgXn_div_gen	2192930
RgXn_div_i	1286750
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52933
RgXn_inv	807484
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	906401
RgXn_inv_i	906402
RgXn_mul	11102998
RgXn_mul2	9453356
RgXn_mul_basecase	6658643
RgXn_mulhigh	2621494
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	642793
RgXn_red_shallow	7950687
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	81799164
Rg_RgX_sub	4954780
Rg_get_0	6942982
Rg_get_1	156959589
Rg_to_RgC	1361056
ZXQX_dvd	17734
ZXQ_powers	12166
ZXQ_powu	168507
ZX_unscale	674286
ZX_unscale2n	1974180
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1171647
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	111222
_ZXQsqr	200632
_add	623478
_cmul	1040794
_gen_add	19637662
_gen_cmul	512818
_gen_mul	1973719
_gen_nored	2149875
_gen_one	2192745
_gen_sqr	635236
_gen_sub	0
_gen_zero	24184
_mul	281042
_mulXn	4528
_one	1019910
_oneXn	1939
_pow	88307
_red	724422
_sqr	74885
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19614111
do_QXQ_eval	3619
gen_RgXQ_eval_powers	14036836
gen_bkeval	881701
gen_bkeval_powers	12144495
get_Rg_algebra	294916
rem	1050986
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