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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31057-89c4d54ba6) Lines: 90.5 % 1808 1636 Test Date: 2026-07-25 17:02:42 Functions: 91.2 % 226 206 Legend: Lines:     hit not hit

Function Name	Hit count
RgXQX_mul	0
RgXQX_powers	0
RgXQX_sqr	0
RgXV_prod	0
RgX_RgXQV_eval	0
RgX_RgXn_eval	0
RgX_Rg_eval_bk	0
RgX_Rg_translate_FpX	0
RgX_rotate_shallow	0
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgXn_div_FpXQX	0
RgXn_exp	0
RgXn_inv_FpXQX	0
RgXn_powu	0
RgXn_sqr_basecase	0
_RgX_mul	0
_gen_sub	0
_sub	0
_zeroXn	0
RgX_Rg_translate_FpXQX	7
RgXn_sqrt	7
RgXn_sqrhigh	14
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
RgXn_div_FpX	98
RgXQX_RgXQ_mul	105
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
RgXn_reverse	154
RgXQV_RgXQ_mul	168
RgX_sqr_FpXQX	196
QXY_QXQ_evalx	294
_gen_zero	301
RgXn_sqr2	315
RgXQM_mul	322
RgXX_to_RgM	322
zero_FpXQX_mod	329
RgXQ_trace	476
RgXnV_red_shallow	483
RgXn_powers	483
RgXV_maxdegree	588
RgX_derivn	833
RgX_RgXnV_eval	966
_zero	1232
RgX_homogenize_deg	1260
ZX_unscale_divpow	1393
RgXQV_red	1449
QXQX_homogenous_evalpow	1652
RgX_mul_FpXQX	1792
_oneXn	1939
RgXn_powu_i	2286
RgXV_rescale	2401
RgXQ_norm	2659
RgX_divs	2863
RgXQ_matrix_pow	2933
RgXV_RgV_eval	2947
RgX_digits	3234
QXV_QXQ_eval	3248
do_QXQ_eval	3542
RgXY_derivx	3864
RgX_muls	3985
_mulXn	4528
RgXY_swap	5495
RgXn_eval	5747
RgXV_unscale	6489
RgX_homogenous_derivn	6552
QXQM_to_mod_shallow	7063
RgXQV_factorback	7118
RgM_to_RgXV_reverse	7202
QX_ZXQV_eval	7455
RgXQ_powers	8603
QXQ_powers	9506
_RgX_divrem	11809
RgX_pseudodivrem	11832
_sqrXn	11893
ZXQ_powers	12061
RgXn_sqr	12152
RgXQX_pseudodivrem	12196
QXQXV_to_mod	12572
ZX_unscale_div	12997
RgX_splitting	13853
RgXQM_red	13881
QXQC_to_mod_shallow	15540
RgX_sqr_QXQX	16876
RgX_sqr_FpX	17059
RgX_homogenize	18102
ZXQX_dvd	19970
RgM_to_RgXX	23940
QXQV_to_mod	24045
RgX_affine	31857
RgXQX_RgXQ_translate	33584
RgX_recip	35245
RgXY_swapspec	35641
QXQX_to_mod	37212
RgX_sqr_i	38094
RgX_sqrspec_basecase	38133
RgX_sqrspec	38172
RgX_normalize	39816
RgX_rem_QXQX	49851
RgXn_expint	52920
RgX_unscale	54345
RgX_integXn	56378
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65089
RgX_rem_FpX	68285
RgXQC_red	69559
RgX_homogenous_eval	72666
_sqr	75045
RgXV_to_RgM	79004
_pow	88307
zero_FpX_mod	89831
RgX_sqrspec_basecase_limb	100481
RgXQ_pow	102384
_ZXQmul	111147
RgXQ_powu	120636
RgXQX_pseudorem	138802
RgX_pseudorem	138802
RgX_RgV_eval	142885
RgXQX_divrem	157103
RgX_mul2n	163043
ZXQ_powu	168439
QXQ_to_mod	172056
RgV_to_RgX_reverse	186645
RgX_mul_QXQX	190103
_ZXQsqr	200509
QXQX_to_mod_shallow	204376
Kronecker_to_mod	208631
RgX_addspec	222642
RgX_div_by_X_x	268485
_mul	281196
get_Rg_algebra	297601
RgM_to_RgXV	303983
RgV_to_RgM	337243
RgX_RgXQ_eval	417647
RgX_liftred	496784
_gen_cmul	512818
RgX_addmulXn	515112
RgXQX_red	550678
RgXn_div	579911
RgX_mul_FpX	590359
_add	623528
RgX_homogenous_evalpow	642150
RgXn_recip_shallow	657305
_gen_sqr	668151
ZX_unscale	697320
_red	724501
RgXn_inv	808269
RgX_deriv	835059
QXQ_to_mod_shallow	844496
gen_bkeval	884839
RgX_valrem_inexact	900765
RgX_inflate	906032
RgXn_inv_fast	1006492
RgXn_inv_i	1006492
_one	1019936
_cmul	1040916
rem	1056557
RgX_deflate	1171381
ZX_z_unscale	1195215
RgX_Rg_sub	1229821
Rg_to_RgC	1363209
RgXn_div_fast	1416946
RgXn_div_i	1416946
RgX_sqr	1481723
RgX_sqr_fast	1493875
RgX_shift	1577805
RgX_mul_normalized	1847104
RgX_mulhigh_i2	1887209
ZX_unscale2n	2014013
RgXY_degreex	2023184
_gen_mul	2075226
_gen_nored	2225529
_gen_one	2267963
RgV_to_RgX	2307603
RgXn_div_gen	2423249
RgX_recipspec_shallow	2597460
RgXn_mulhigh	2934699
RgX_mulhigh_i	2991091
RgX_mulXn	2997594
RgX_blocks	3107649
RgX_recip_i	3761379
RgX_val	4098816
RgX_rescale	4355934
Rg_RgX_sub	4967908
RgX_Rg_divexact	5316310
RgX_Rg_translate_basecase	6223079
RgX_Rg_translate_i	6223268
RgX_Rg_translate	6584403
RgX_Rg_translate_fast	6584403
Rg_get_0	6943087
RgX_neg	7557909
RgXn_mul_basecase	7866119
RgX_renormalize_lg	8232835
RgXn_red_shallow	8445519
RgX_addspec_shallow	9120637
RgX_addmulXn_shallow	9803920
RgXn_mul2	10985058
gen_bkeval_powers	12158053
RgXn_mul	12645790
gen_RgXQ_eval_powers	14149826
RgX_divrem	14190198
RgX_rem	15066337
RgX_rem_fast	15066337
RgX_to_RgC	15495714
brent_kung_optpow	19714386
RgX_divrem_i	23462894
RgX_equal	25063332
_gen_add	25712814
RgX_Rg_div	30836483
RgX_mulspec_basecase	34876236
RgX_mul_i	39506013
RgX_mulspec	40943397
RgX_Rg_add	42986106
RgX_even_odd	49933633
RgX_sub	73524402
RgX_valrem	80944648
RgXspec_kill0	85522843
RgX_mul	106936152
RgX_mulspec_basecase_limb	116519526
RgX_mul_fast	122573033
RgX_add	144427090
Rg_get_1	157133279
RgX_shift_shallow	178335123
RgX_Rg_mul	200075518

Generated by: LCOV version 2.0-1