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 30802-b11b770002) Lines: 1673 1844 90.7 % Date: 2026-04-11 09:26:21 Functions: 211 231 91.3 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	180561
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	302956
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23714
RgV_to_RgM	336530
RgV_to_RgX	2283429
RgV_to_RgX_reverse	188283
RgXQC_red	68187
RgXQM_mul	322
RgXQM_red	13195
RgXQV_RgXQ_mul	168
RgXQV_factorback	7118
RgXQV_red	1449
RgXQX_RgXQ_mul	35
RgXQX_RgXQ_translate	33584
RgXQX_divrem	156752
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12077
RgXQX_pseudorem	138802
RgXQX_red	497492
RgXQX_sqr	0
RgXQ_matrix_pow	2933
RgXQ_norm	2659
RgXQ_pow	102160
RgXQ_powers	8603
RgXQ_powu	120406
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79011
RgXV_unscale	6489
RgXX_to_RgM	322
RgXY_degreex	2022605
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	33141
RgX_RgV_eval	142885
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417394
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	26293531
RgX_Rg_add_shallow	65086
RgX_Rg_div	29637058
RgX_Rg_divexact	5238144
RgX_Rg_eval_bk	0
RgX_Rg_mul	236773371
RgX_Rg_sub	223144
RgX_Rg_translate	6445696
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	6084975
RgX_Rg_translate_fast	6445694
RgX_Rg_translate_i	6085164
RgX_add	118065957
RgX_addmulXn	514933
RgX_addmulXn_shallow	9743626
RgX_addspec	222463
RgX_addspec_shallow	9061967
RgX_affine	30226
RgX_blocks	3021591
RgX_coeff_add	441813691
RgX_coeff_div	36967866
RgX_coeff_mul	728329183
RgX_coeff_simplify	113647662
RgX_coeff_sub	247257640
RgX_deflate	1187346
RgX_deriv	831446
RgX_derivn	798
RgX_digits	3234
RgX_div_by_X_x	265216
RgX_divrem	14181721
RgX_divrem_i	23448329
RgX_divs	2863
RgX_equal	24796437
RgX_even_odd	49866199
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_derivn	0
RgX_homogenous_eval	16604
RgX_homogenous_evalpow	629213
RgX_inflate	885259
RgX_integXn	56376
RgX_liftred	444256
RgX_mul	69243250
RgX_mul2n	159564
RgX_mulXn	2997517
RgX_mul_FpX	582113
RgX_mul_FpXQX	1477
RgX_mul_QXQX	165568
RgX_mul_fast	84367981
RgX_mul_i	32815118
RgX_mul_normalized	1821786
RgX_mulhigh_i	2904794
RgX_mulhigh_i2	1801193
RgX_muls	3985
RgX_mulspec	34251920
RgX_mulspec_basecase	33611288
RgX_mulspec_basecase_limb	113557764
RgX_neg	6522081
RgX_normalize	39711
RgX_pseudodivrem	11832
RgX_pseudorem	138802
RgX_recip	35301
RgX_recip_i	3756394
RgX_recip_shallow	59388
RgX_recipspec_shallow	2586560
RgX_rem	14658278
RgX_rem_FpX	67781
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14658262
RgX_renormalize_lg	8301660
RgX_rescale	4352770
RgX_rotate_shallow	317037
RgX_shift	1577735
RgX_shift_shallow	175797338
RgX_splitting	43631
RgX_sqr	1499118
RgX_sqr_FpX	16975
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13418
RgX_sqr_fast	1511270
RgX_sqr_i	33236
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	33314
RgX_sqrspec_basecase	33275
RgX_sqrspec_basecase_limb	94825
RgX_sub	69191393
RgX_to_RgC	15338902
RgX_unscale	52062
RgX_val	3984033
RgX_valrem	80780249
RgX_valrem_inexact	882625
RgXnV_red_shallow	483
RgXn_div	562607
RgXn_div_FpX	98
RgXn_div_FpXQX	0
RgXn_div_fast	1366421
RgXn_div_gen	2371582
RgXn_div_i	1366421
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52920
RgXn_inv	808301
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	1005341
RgXn_inv_i	1005341
RgXn_mul	12219932
RgXn_mul2	10559969
RgXn_mul_basecase	7591743
RgXn_mulhigh	2848403
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	645781
RgXn_red_shallow	8301966
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	82439150
Rg_RgX_sub	4886741
Rg_get_0	1862498
Rg_get_1	156849065
Rg_to_RgC	1360199
ZXQX_dvd	17720
ZXQ_powers	12061
ZXQ_powu	168496
ZX_unscale	681402
ZX_unscale2n	1988707
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1179248
_RgX_divrem	11809
_RgX_mul	0
_ZXQmul	111182
_ZXQsqr	200593
_add	623235
_cmul	1040369
_gen_add	19637444
_gen_cmul	512818
_gen_mul	1974339
_gen_nored	2150489
_gen_one	2193292
_gen_sqr	635449
_gen_sub	0
_gen_zero	301
_mul	280959
_mulXn	4528
_one	1019354
_oneXn	1939
_pow	88307
_red	724098
_sqr	74805
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19609657
do_QXQ_eval	3542
gen_RgXQ_eval_powers	14037253
gen_bkeval	881599
gen_bkeval_powers	12120596
get_Rg_algebra	294988
rem	1050958
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	91
zero_FpX_mod	83272

Generated by: LCOV version 1.16