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 30674-be81ecfdd4) Lines: 1624 1787 90.9 % Date: 2026-02-11 09:23:10 Functions: 204 223 91.5 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	185965
QXQC_to_mod_shallow	14854
QXQM_to_mod_shallow	6720
QXQV_to_mod	22343
QXQXV_to_mod	12572
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37212
QXQX_to_mod_shallow	204096
QXQ_powers	9506
QXQ_to_mod	168329
QXQ_to_mod_shallow	840695
QXV_QXQ_eval	3248
QXY_QXQ_evalx	294
QX_ZXQV_eval	7455
RgM_to_RgXV	302863
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23714
RgV_to_RgM	336458
RgV_to_RgX	2287408
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	156752
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138802
RgXQX_red	508139
RgXQX_sqr	0
RgXQ_matrix_pow	2933
RgXQ_norm	2680
RgXQ_pow	102160
RgXQ_powers	8603
RgXQ_powu	120402
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79009
RgXV_unscale	6489
RgXX_to_RgM	322
RgXY_degreex	2022125
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32775
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417408
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42750521
RgX_Rg_add_shallow	65079
RgX_Rg_div	30724501
RgX_Rg_divexact	5264060
RgX_Rg_eval_bk	0
RgX_Rg_mul	199299250
RgX_Rg_sub	1226045
RgX_Rg_translate	6070638
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5709474
RgX_Rg_translate_fast	6070666
RgX_Rg_translate_i	5709666
RgX_add	143378126
RgX_addmulXn	514865
RgX_addmulXn_shallow	9529714
RgX_addspec	222395
RgX_addspec_shallow	8854323
RgX_affine	30226
RgX_blocks	2742935
RgX_deflate	1185959
RgX_deriv	830509
RgX_digits	3234
RgX_div_by_X_x	264972
RgX_divrem	14176595
RgX_divrem_i	23427481
RgX_divs	2863
RgX_equal	24798873
RgX_even_odd	49760507
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	395425
RgX_inflate	885181
RgX_integXn	56375
RgX_liftred	454903
RgX_mul	105387489
RgX_mul2n	65268
RgX_mulXn	2997524
RgX_mul_FpX	590660
RgX_mul_FpXQX	2079
RgX_mul_QXQX	170888
RgX_mul_fast	118936365
RgX_mul_i	38776108
RgX_mul_normalized	1720947
RgX_mulhigh_i	2626137
RgX_mulhigh_i2	1595393
RgX_muls	3985
RgX_mulspec	40212702
RgX_mulspec_basecase	34146264
RgX_mulspec_basecase_limb	111283171
RgX_neg	7450862
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138802
RgX_recip	30793
RgX_recip_i	3750638
RgX_recip_shallow	59388
RgX_recipspec_shallow	2583191
RgX_rem	14698051
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14697970
RgX_renormalize_lg	7795642
RgX_rescale	4343748
RgX_rotate_shallow	317037
RgX_shift	1577742
RgX_shift_shallow	177222955
RgX_splitting	43631
RgX_sqr	1299471
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1311623
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	72789379
RgX_to_RgC	15066883
RgX_unscale	52058
RgX_val	3678434
RgX_valrem	80760942
RgX_valrem_inexact	852203
RgXnV_red_shallow	483
RgXn_div	532507
RgXn_div_FpX	98
RgXn_div_FpXQX	0
RgXn_div_fast	1234821
RgXn_div_gen	2141035
RgXn_div_i	1234821
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52920
RgXn_inv	807481
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	906410
RgXn_inv_i	906410
RgXn_mul	10922709
RgXn_mul2	9379769
RgXn_mul_basecase	6658643
RgXn_mulhigh	2569747
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	642513
RgXn_red_shallow	7847872
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	81647673
Rg_RgX_sub	4953959
Rg_get_0	6942940
Rg_get_1	156953983
Rg_to_RgC	1359960
ZXQX_dvd	17734
ZXQ_powers	12061
ZXQ_powu	168432
ZX_unscale	674286
ZX_unscale2n	1974091
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1171639
_RgX_divrem	11809
_RgX_mul	0
_ZXQmul	111144
_ZXQsqr	200501
_add	623225
_cmul	1040372
_gen_add	19665710
_gen_cmul	512818
_gen_mul	1975139
_gen_nored	2151115
_gen_one	2193805
_gen_sqr	635596
_gen_sub	0
_gen_zero	24184
_mul	280947
_mulXn	4528
_one	1019370
_oneXn	1939
_pow	88307
_red	724097
_sqr	74800
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19604842
do_QXQ_eval	3542
gen_RgXQ_eval_powers	14038119
gen_bkeval	881449
gen_bkeval_powers	12146257
get_Rg_algebra	294995
rem	1050987
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	616
zero_FpX_mod	91714

Generated by: LCOV version 1.16