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 30676-32b8a71ec1) Lines: 1624 1787 90.9 % Date: 2026-02-14 09:22:40 Functions: 204 223 91.5 % 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_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
RgXQX_RgXQ_mul	35
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
RgXn_div_FpX	98
RgXQV_RgXQ_mul	133
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
RgXn_reverse	154
RgX_sqr_FpXQX	196
QXY_QXQ_evalx	294
RgXn_sqr2	315
RgXQM_mul	322
RgXX_to_RgM	322
RgXQ_trace	476
RgXnV_red_shallow	483
RgXn_powers	483
RgXV_maxdegree	588
zero_FpXQX_mod	616
RgX_RgXnV_eval	966
_zero	1232
RgX_homogenize_deg	1260
ZX_unscale_divpow	1393
RgX_sqr_FpX	1407
RgXQV_red	1414
QXQX_homogenous_evalpow	1652
_oneXn	1939
RgXY_swap	2051
RgX_mul_FpXQX	2079
RgXn_powu_i	2286
RgXV_rescale	2401
RgXQ_norm	2680
RgX_divs	2863
RgXQ_matrix_pow	2933
RgXV_RgV_eval	2947
RgX_digits	3234
QXV_QXQ_eval	3248
do_QXQ_eval	3542
RgXY_derivx	3836
RgX_muls	3985
_mulXn	4528
RgXn_eval	5593
RgXV_unscale	6488
QXQM_to_mod_shallow	6720
RgXQV_factorback	7118
RgM_to_RgXV_reverse	7202
QX_ZXQV_eval	7455
RgXQ_powers	8603
QXQ_powers	9506
_RgX_divrem	11809
RgX_pseudodivrem	11818
_sqrXn	11893
ZXQ_powers	12061
RgXQX_pseudodivrem	12063
RgXn_sqr	12152
QXQXV_to_mod	12572
ZX_unscale_div	12997
RgXQM_red	13195
RgX_sqr_QXQX	13425
QXQC_to_mod_shallow	14854
ZXQX_dvd	17734
RgX_homogenize	18102
QXQV_to_mod	22338
RgM_to_RgXX	23714
_gen_zero	24184
RgX_affine	30226
RgX_recip	30793
RgXY_swapspec	32777
RgXQX_RgXQ_translate	33584
QXQX_to_mod	37212
RgX_sqr_i	37961
RgX_sqrspec_basecase	38000
RgX_sqrspec	38039
RgX_normalize	39711
RgX_splitting	43631
RgX_rem_QXQX	49851
RgX_unscale	52057
RgXn_expint	52918
RgX_integXn	56376
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65074
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74801
RgXV_to_RgM	79010
_pow	88307
zero_FpX_mod	91714
RgX_sqrspec_basecase_limb	100082
RgXQ_pow	102160
_ZXQmul	111180
RgXQ_powu	120424
RgXQX_pseudorem	138801
RgX_pseudorem	138801
RgXQX_divrem	156752
RgX_RgV_eval	166768
QXQ_to_mod	168325
ZXQ_powu	168506
RgX_mul_QXQX	170888
Kronecker_to_mod	185965
RgV_to_RgX_reverse	188283
_ZXQsqr	200591
QXQX_to_mod_shallow	204096
RgX_addspec	222428
RgX_div_by_X_x	264973
_mul	280945
get_Rg_algebra	295001
RgM_to_RgXV	302855
RgX_rotate_shallow	317037
RgV_to_RgM	336450
RgX_homogenous_evalpow	395410
RgX_RgXQ_eval	417400
RgX_liftred	454903
RgXQX_red	508139
_gen_cmul	512818
RgX_addmulXn	514898
RgXn_div	532507
RgX_mul_FpX	590660
_add	623212
_gen_sqr	635563
RgXn_recip_shallow	642509
ZX_unscale	674286
_red	724086
RgXn_inv	807481
RgX_deriv	830501
QXQ_to_mod_shallow	840695
RgX_valrem_inexact	852203
gen_bkeval	881516
RgX_inflate	885210
RgXn_inv_fast	906410
RgXn_inv_i	906410
_one	1019342
_cmul	1040348
rem	1050974
ZX_z_unscale	1171636
RgX_deflate	1185994
RgX_Rg_sub	1226028
RgXn_div_fast	1234821
RgXn_div_i	1234821
RgX_sqr	1299448
RgX_sqr_fast	1311600
Rg_to_RgC	1359931
RgX_shift	1577742
RgX_mulhigh_i2	1595393
RgX_mul_normalized	1720966
ZX_unscale2n	1974092
_gen_mul	1974960
RgXY_degreex	2022207
RgXn_div_gen	2141042
_gen_nored	2151021
_gen_one	2193775
RgV_to_RgX	2287442
RgXn_mulhigh	2569747
RgX_recipspec_shallow	2583346
RgX_mulhigh_i	2626136
RgX_blocks	2742935
RgX_mulXn	2997524
RgX_val	3678434
RgX_recip_i	3750866
RgX_rescale	4343779
Rg_RgX_sub	4953901
RgX_Rg_divexact	5263529
RgX_Rg_translate_basecase	5709470
RgX_Rg_translate_i	5709658
RgX_Rg_translate_fast	6070649
RgX_Rg_translate	6070651
RgXn_mul_basecase	6658643
Rg_get_0	6942940
RgX_neg	7450784
RgX_renormalize_lg	7795641
RgXn_red_shallow	7847878
RgX_addspec_shallow	8854325
RgXn_mul2	9379769
RgX_addmulXn_shallow	9529671
RgXn_mul	10922718
gen_bkeval_powers	12144693
gen_RgXQ_eval_powers	14037046
RgX_divrem	14176560
RgX_rem_fast	14697915
RgX_rem	14697924
RgX_to_RgC	15066806
brent_kung_optpow	19605012
_gen_add	19666643
RgX_divrem_i	23427307
RgX_equal	24798915
RgX_Rg_div	30724484
RgX_mulspec_basecase	34146148
RgX_mul_i	38775934
RgX_mulspec	40212591
RgX_Rg_add	42750488
RgX_even_odd	49759437
RgX_sub	72789997
RgX_valrem	80754199
RgXspec_kill0	81647441
RgX_mul	105387014
RgX_mulspec_basecase_limb	111283105
RgX_mul_fast	118936184
RgX_add	143377877
Rg_get_1	156953982
RgX_shift_shallow	177217190
RgX_Rg_mul	199298534

Generated by: LCOV version 1.16