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 v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 90.5 % 1808 1636 Test Date: 2026-07-22 22:45:42 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	6488
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	19967
RgM_to_RgXX	23940
QXQV_to_mod	24048
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	52918
RgX_unscale	54338
RgX_integXn	56374
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65099
RgX_rem_FpX	68285
RgXQC_red	69559
RgX_homogenous_eval	72666
_sqr	75048
RgXV_to_RgM	79003
_pow	88307
zero_FpX_mod	89831
RgX_sqrspec_basecase_limb	100481
RgXQ_pow	102384
_ZXQmul	111182
RgXQ_powu	120638
RgXQX_pseudorem	138801
RgX_pseudorem	138801
RgX_RgV_eval	142885
RgXQX_divrem	157100
RgX_mul2n	163043
ZXQ_powu	168513
QXQ_to_mod	172056
RgV_to_RgX_reverse	186645
RgX_mul_QXQX	190103
_ZXQsqr	200597
QXQX_to_mod_shallow	204376
Kronecker_to_mod	208631
RgX_addspec	222643
RgX_div_by_X_x	268479
_mul	281194
get_Rg_algebra	297580
RgM_to_RgXV	303981
RgV_to_RgM	337224
RgX_RgXQ_eval	417636
RgX_liftred	496784
_gen_cmul	512818
RgX_addmulXn	515113
RgXQX_red	550678
RgXn_div	579911
RgX_mul_FpX	590359
_add	623519
RgX_homogenous_evalpow	642083
RgXn_recip_shallow	657302
_gen_sqr	667973
ZX_unscale	697320
_red	724477
RgXn_inv	808259
RgX_deriv	835051
QXQ_to_mod_shallow	844496
gen_bkeval	885136
RgX_valrem_inexact	900765
RgX_inflate	906196
RgXn_inv_i	1006440
RgXn_inv_fast	1006466
_one	1019927
_cmul	1040900
rem	1056531
RgX_deflate	1171320
ZX_z_unscale	1195205
RgX_Rg_sub	1229838
Rg_to_RgC	1363016
RgXn_div_fast	1416946
RgXn_div_i	1416946
RgX_sqr	1481659
RgX_sqr_fast	1493812
RgX_shift	1577805
RgX_mul_normalized	1847083
RgX_mulhigh_i2	1887209
ZX_unscale2n	2013961
RgXY_degreex	2023169
_gen_mul	2072418
_gen_nored	2222768
_gen_one	2265753
RgV_to_RgX	2307694
RgXn_div_gen	2423240
RgX_recipspec_shallow	2598268
RgXn_mulhigh	2934699
RgX_mulhigh_i	2991089
RgX_mulXn	2997594
RgX_blocks	3107649
RgX_recip_i	3762546
RgX_val	4098816
RgX_rescale	4355810
Rg_RgX_sub	4967594
RgX_Rg_divexact	5310316
RgX_Rg_translate_basecase	6222976
RgX_Rg_translate_i	6223167
RgX_Rg_translate	6584299
RgX_Rg_translate_fast	6584299
Rg_get_0	6943087
RgX_neg	7557520
RgXn_mul_basecase	7866119
RgX_renormalize_lg	8232833
RgXn_red_shallow	8445514
RgX_addspec_shallow	9120134
RgX_addmulXn_shallow	9803284
RgXn_mul2	10985058
gen_bkeval_powers	12146312
RgXn_mul	12645783
gen_RgXQ_eval_powers	14140110
RgX_divrem	14190077
RgX_rem_fast	15065725
RgX_rem	15065733
RgX_to_RgC	15494967
brent_kung_optpow	19698075
RgX_divrem_i	23462220
RgX_equal	25063318
_gen_add	25478203
RgX_Rg_div	30836055
RgX_mulspec_basecase	34875526
RgX_mul_i	39505412
RgX_mulspec	40942704
RgX_Rg_add	42985703
RgX_even_odd	49901755
RgX_sub	73502023
RgX_valrem	80884094
RgXspec_kill0	85521271
RgX_mul	106935257
RgX_mulspec_basecase_limb	116515110
RgX_mul_fast	122572129
RgX_add	144419032
Rg_get_1	157133277
RgX_shift_shallow	178206835
RgX_Rg_mul	200064243

Generated by: LCOV version 2.0-1