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 30532-0c728fd268) Lines: 1631 1787 91.3 % Date: 2025-10-23 09:22:47 Functions: 205 223 91.9 % 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	22339
QXQXV_to_mod	12733
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37471
QXQX_to_mod_shallow	204096
QXQ_powers	9590
QXQ_to_mod	169944
QXQ_to_mod_shallow	840695
QXV_QXQ_eval	3241
QXY_QXQ_evalx	371
QX_ZXQV_eval	7595
RgM_to_RgXV	303250
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23686
RgV_to_RgM	336727
RgV_to_RgX	2289098
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	156857
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138873
RgXQX_red	508139
RgXQX_sqr	0
RgXQ_matrix_pow	2940
RgXQ_norm	2680
RgXQ_pow	102160
RgXQ_powers	8610
RgXQ_powu	120511
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79032
RgXV_unscale	6559
RgXX_to_RgM	322
RgXY_degreex	2022556
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32777
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417521
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42746597
RgX_Rg_add_shallow	65106
RgX_Rg_div	30729822
RgX_Rg_divexact	5262030
RgX_Rg_eval_bk	0
RgX_Rg_mul	199289338
RgX_Rg_sub	1226098
RgX_Rg_translate	6065160
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5703387
RgX_Rg_translate_fast	6065160
RgX_Rg_translate_i	5703575
RgX_add	143427050
RgX_addmulXn	514864
RgX_addmulXn_shallow	9527295
RgX_addspec	222394
RgX_addspec_shallow	8851615
RgX_affine	30212
RgX_blocks	2788512
RgX_deflate	1187994
RgX_deriv	830954
RgX_digits	3157
RgX_div_by_X_x	265481
RgX_divrem	14181194
RgX_divrem_i	23433334
RgX_divs	2863
RgX_equal	24796892
RgX_even_odd	49764395
RgX_homogenize	18732
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	398978
RgX_inflate	885468
RgX_integXn	56377
RgX_liftred	454903
RgX_mul	105469443
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	170888
RgX_mul_fast	119208408
RgX_mul_i	38837606
RgX_mul_normalized	1719185
RgX_mulhigh_i	2671219
RgX_mulhigh_i2	1589510
RgX_muls	3992
RgX_mulspec	40274163
RgX_mulspec_basecase	34207834
RgX_mulspec_basecase_limb	111265755
RgX_neg	7451416
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138873
RgX_recip	31423
RgX_recip_i	3751768
RgX_recip_shallow	59388
RgX_recipspec_shallow	2584082
RgX_rem	14700521
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14700515
RgX_renormalize_lg	7886718
RgX_rescale	4344710
RgX_rotate_shallow	317037
RgX_shift	1578036
RgX_shift_shallow	177392208
RgX_splitting	43631
RgX_sqr	1299279
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1311431
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	72853564
RgX_to_RgC	15067611
RgX_unscale	51885
RgX_val	3667912
RgX_valrem	80752404
RgX_valrem_inexact	852371
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1284113
RgXn_div_gen	2189143
RgXn_div_i	1284113
RgXn_eval	5187
RgXn_exp	0
RgXn_expint	52918
RgXn_inv	807481
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	905248
RgXn_inv_i	905249
RgXn_mul	11067747
RgXn_mul2	9420016
RgXn_mul_basecase	6633454
RgXn_mulhigh	2614827
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	643072
RgXn_red_shallow	7944228
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	81720347
Rg_RgX_sub	4954589
Rg_get_0	6942982
Rg_get_1	156956994
Rg_to_RgC	1360829
ZXQX_dvd	17734
ZXQ_powers	12145
ZXQ_powu	168509
ZX_unscale	674286
ZX_unscale2n	1974177
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1171633
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	111193
_ZXQsqr	200611
_add	623389
_cmul	1040653
_gen_add	19650550
_gen_cmul	512818
_gen_mul	1974518
_gen_nored	2150785
_gen_one	2193717
_gen_sqr	635541
_gen_sub	0
_gen_zero	24184
_mul	281002
_mulXn	4528
_one	1019748
_oneXn	1939
_pow	88307
_red	724307
_sqr	74879
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19600643
do_QXQ_eval	3612
gen_RgXQ_eval_powers	14038230
gen_bkeval	881706
gen_bkeval_powers	12145187
get_Rg_algebra	294994
rem	1050978
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