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 31092-e6893b0017) Lines: 90.5 % 1808 1636 Test Date: 2026-08-12 17:02:34 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	7119
RgM_to_RgXV_reverse	7203
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	12999
RgX_splitting	13853
RgXQM_red	13881
QXQC_to_mod_shallow	15540
RgX_sqr_QXQX	16876
RgX_sqr_FpX	17059
RgX_homogenize	18102
ZXQX_dvd	19968
RgM_to_RgXX	23940
QXQV_to_mod	24045
RgX_affine	31857
RgXQX_RgXQ_translate	33584
RgX_recip	35245
RgXY_swapspec	35649
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	65093
RgX_rem_FpX	68285
RgXQC_red	69559
RgX_homogenous_eval	72667
_sqr	75047
RgXV_to_RgM	79004
_pow	88333
zero_FpX_mod	89831
RgX_sqrspec_basecase_limb	100481
RgXQ_pow	102410
_ZXQmul	111182
RgXQ_powu	120632
RgXQX_pseudorem	138802
RgX_pseudorem	138802
RgX_RgV_eval	142885
RgXQX_divrem	157103
RgX_mul2n	163044
ZXQ_powu	168517
QXQ_to_mod	172056
RgV_to_RgX_reverse	186648
RgX_mul_QXQX	190103
_ZXQsqr	200601
QXQX_to_mod_shallow	204376
Kronecker_to_mod	208631
RgX_addspec	222642
RgX_div_by_X_x	268487
_mul	281216
get_Rg_algebra	297601
RgM_to_RgXV	303985
RgV_to_RgM	337243
RgX_RgXQ_eval	417649
RgX_liftred	496784
_gen_cmul	512818
RgX_addmulXn	515112
RgXQX_red	550678
RgXn_div	579911
RgX_mul_FpX	590359
_add	623529
RgX_homogenous_evalpow	642196
RgXn_recip_shallow	657306
_gen_sqr	668151
ZX_unscale	697343
_red	724495
RgXn_inv	808269
RgX_deriv	835084
QXQ_to_mod_shallow	844496
gen_bkeval	884877
RgX_valrem_inexact	900763
RgX_inflate	906055
RgXn_inv_fast	1006492
RgXn_inv_i	1006492
_one	1019935
_cmul	1040919
rem	1056557
RgX_deflate	1171386
ZX_z_unscale	1195233
RgX_Rg_sub	1229813
Rg_to_RgC	1363209
RgXn_div_fast	1416946
RgXn_div_i	1416946
RgX_sqr	1481771
RgX_sqr_fast	1493923
RgX_shift	1577805
RgX_mul_normalized	1847102
RgX_mulhigh_i2	1887209
ZX_unscale2n	2014080
RgXY_degreex	2023232
_gen_mul	2075226
_gen_nored	2225529
_gen_one	2267963
RgV_to_RgX	2307617
RgXn_div_gen	2423249
RgX_recipspec_shallow	2597557
RgXn_mulhigh	2934700
RgX_mulhigh_i	2991092
RgX_mulXn	2997594
RgX_blocks	3107650
RgX_recip_i	3761786
RgX_val	4098816
RgX_rescale	4356163
Rg_RgX_sub	4968960
RgX_Rg_divexact	5316295
RgX_Rg_translate_basecase	6223287
RgX_Rg_translate_i	6223476
RgX_Rg_translate	6584601
RgX_Rg_translate_fast	6584601
Rg_get_0	6943087
RgX_neg	7558055
RgXn_mul_basecase	7866119
RgX_renormalize_lg	8232837
RgXn_red_shallow	8445522
RgX_addspec_shallow	9120816
RgX_addmulXn_shallow	9804174
RgXn_mul2	10985058
gen_bkeval_powers	12158483
RgXn_mul	12645792
gen_RgXQ_eval_powers	14150608
RgX_divrem	14190756
RgX_rem	15068447
RgX_rem_fast	15068447
RgX_to_RgC	15495754
brent_kung_optpow	19714313
RgX_divrem_i	23465556
RgX_equal	25063328
_gen_add	25712814
RgX_Rg_div	30836554
RgX_mulspec_basecase	34878365
RgX_mul_i	39508142
RgX_mulspec	40945526
RgX_Rg_add	42986180
RgX_even_odd	49936973
RgX_sub	73527721
RgX_valrem	80947953
RgXspec_kill0	85527101
RgX_mul	106938308
RgX_mulspec_basecase_limb	116524531
RgX_mul_fast	122575192
RgX_add	144428348
Rg_get_1	157133290
RgX_shift_shallow	178342341
RgX_Rg_mul	200076536

Generated by: LCOV version 2.0-1