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 30702-bddb8d6928) Lines: 1624 1787 90.9 % Date: 2026-02-23 02:23:56 Functions: 204 223 91.5 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	158190
QXQC_to_mod_shallow	12721
QXQM_to_mod_shallow	5756
QXQV_to_mod	19125
QXQXV_to_mod	10626
QXQX_homogenous_evalpow	1416
QXQX_to_mod	31139
QXQX_to_mod_shallow	173615
QXQ_powers	8061
QXQ_to_mod	141702
QXQ_to_mod_shallow	716802
QXV_QXQ_eval	2741
QXY_QXQ_evalx	252
QX_ZXQV_eval	6271
RgM_to_RgXV	254828
RgM_to_RgXV_reverse	6173
RgM_to_RgXX	20091
RgV_to_RgM	287605
RgV_to_RgX	1917620
RgV_to_RgX_reverse	160544
RgXQC_red	58424
RgXQM_mul	276
RgXQM_red	11302
RgXQV_RgXQ_mul	102
RgXQV_factorback	6101
RgXQV_red	1200
RgXQX_RgXQ_mul	30
RgXQX_RgXQ_translate	28657
RgXQX_divrem	127667
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	10291
RgXQX_pseudorem	110885
RgXQX_red	432049
RgXQX_sqr	0
RgXQ_matrix_pow	2485
RgXQ_norm	2094
RgXQ_pow	87243
RgXQ_powers	7338
RgXQ_powu	102811
RgXQ_trace	399
RgXV_RgV_eval	2526
RgXV_maxdegree	486
RgXV_prod	0
RgXV_rescale	2058
RgXV_to_RgM	67560
RgXV_unscale	5536
RgXX_to_RgM	276
RgXY_degreex	1615757
RgXY_derivx	3288
RgXY_swap	1758
RgXY_swapspec	27932
RgX_RgV_eval	142939
RgX_RgXQV_eval	0
RgX_RgXQ_eval	355597
RgX_RgXnV_eval	828
RgX_RgXn_eval	0
RgX_Rg_add	35692269
RgX_Rg_add_shallow	55451
RgX_Rg_div	25629641
RgX_Rg_divexact	4425677
RgX_Rg_eval_bk	0
RgX_Rg_mul	168857956
RgX_Rg_sub	1048917
RgX_Rg_translate	5174842
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	5
RgX_Rg_translate_basecase	4869676
RgX_Rg_translate_fast	5174842
RgX_Rg_translate_i	4869829
RgX_add	121730959
RgX_addmulXn	446028
RgX_addmulXn_shallow	8034014
RgX_addspec	189858
RgX_addspec_shallow	7481596
RgX_affine	25851
RgX_blocks	2320689
RgX_deflate	1011455
RgX_deriv	707314
RgX_digits	2772
RgX_div_by_X_x	223548
RgX_divrem	11801014
RgX_divrem_i	19673284
RgX_divs	2454
RgX_equal	21212367
RgX_even_odd	42284656
RgX_homogenize	15504
RgX_homogenize_deg	1080
RgX_homogenous_evalpow	335443
RgX_inflate	753865
RgX_integXn	48253
RgX_liftred	387128
RgX_mul	88063350
RgX_mul2n	55944
RgX_mulXn	2384045
RgX_mul_FpX	505681
RgX_mul_FpXQX	1659
RgX_mul_QXQX	145358
RgX_mul_fast	99565304
RgX_mul_i	32660593
RgX_mul_normalized	1431637
RgX_mulhigh_i	2219700
RgX_mulhigh_i2	1366413
RgX_muls	3378
RgX_mulspec	33906709
RgX_mulspec_basecase	28709374
RgX_mulspec_basecase_limb	93309852
RgX_neg	6201712
RgX_normalize	34038
RgX_pseudodivrem	10083
RgX_pseudorem	110885
RgX_recip	26307
RgX_recip_i	3153396
RgX_recip_shallow	50902
RgX_recipspec_shallow	2149227
RgX_rem	12495569
RgX_rem_FpX	57032
RgX_rem_FpXQX	56
RgX_rem_QXQX	42468
RgX_rem_fast	12495569
RgX_renormalize_lg	6640131
RgX_rescale	3692583
RgX_rotate_shallow	271626
RgX_shift	1167644
RgX_shift_shallow	147198306
RgX_splitting	37362
RgX_sqr	1108200
RgX_sqr_FpX	1200
RgX_sqr_FpXQX	160
RgX_sqr_QXQX	11476
RgX_sqr_fast	1118432
RgX_sqr_i	32195
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	32251
RgX_sqrspec_basecase	32223
RgX_sqrspec_basecase_limb	82691
RgX_sub	61395429
RgX_to_RgC	12792597
RgX_unscale	44407
RgX_val	3145813
RgX_valrem	67505529
RgX_valrem_inexact	715304
RgXnV_red_shallow	414
RgXn_div	441637
RgXn_div_FpX	83
RgXn_div_FpXQX	0
RgXn_div_fast	1043246
RgXn_div_gen	1819901
RgXn_div_i	1043246
RgXn_eval	4773
RgXn_exp	0
RgXn_expint	45331
RgXn_inv	692087
RgXn_inv_FpX	72
RgXn_inv_FpXQX	0
RgXn_inv_fast	776810
RgXn_inv_i	776810
RgXn_mul	9282254
RgXn_mul2	8004558
RgXn_mul_basecase	5688682
RgXn_mulhigh	2171435
RgXn_powers	414
RgXn_powu	0
RgXn_powu_i	1956
RgXn_recip_shallow	545488
RgXn_red_shallow	6680630
RgXn_reverse	132
RgXn_sqr	10232
RgXn_sqr2	252
RgXn_sqr_basecase	0
RgXn_sqrhigh	12
RgXn_sqrt	6
RgXspec_kill0	68828335
Rg_RgX_sub	4215000
Rg_get_0	5849239
Rg_get_1	132157993
Rg_to_RgC	1161802
ZXQX_dvd	15129
ZXQ_powers	9896
ZXQ_powu	105660
ZX_unscale	577003
ZX_unscale2n	1633960
ZX_unscale_div	11109
ZX_unscale_divpow	1194
ZX_z_unscale	1002637
_RgX_divrem	10122
_RgX_mul	0
_ZXQmul	66977
_ZXQsqr	111705
_add	529807
_cmul	885185
_gen_add	16925931
_gen_cmul	439544
_gen_mul	1694928
_gen_nored	1845866
_gen_one	1882226
_gen_sqr	545092
_gen_sub	0
_gen_zero	20727
_mul	238923
_mulXn	3828
_one	867340
_oneXn	1656
_pow	75688
_red	615734
_sqr	63072
_sqrXn	10035
_sub	0
_zero	1052
_zeroXn	0
brent_kung_optpow	16647976
do_QXQ_eval	2993
gen_RgXQ_eval_powers	11712292
gen_bkeval	748506
gen_bkeval_powers	10187594
get_Rg_algebra	252881
rem	858871
rfrac_deflate	100
rfrac_deflate_max	100
rfrac_deflate_order	100
zero_FpXQX_mod	456
zero_FpX_mod	76743

Generated by: LCOV version 1.16