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 30640-c2c58e18c5) Lines: 1631 1787 91.3 % Date: 2026-01-27 08:51:18 Functions: 205 223 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	183736
QXQC_to_mod_shallow	14854
QXQM_to_mod_shallow	6720
QXQV_to_mod	18820
QXQXV_to_mod	8161
QXQX_homogenous_evalpow	1652
QXQX_to_mod	27973
QXQX_to_mod_shallow	203976
QXQ_powers	7898
QXQ_to_mod	134730
QXQ_to_mod_shallow	840425
QXV_QXQ_eval	3218
QXY_QXQ_evalx	294
QX_ZXQV_eval	7395
RgM_to_RgXV	262722
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23684
RgV_to_RgM	280106
RgV_to_RgX	1876366
RgV_to_RgX_reverse	188115
RgXQC_red	68187
RgXQM_mul	322
RgXQM_red	13195
RgXQV_RgXQ_mul	133
RgXQV_factorback	7118
RgXQV_red	1414
RgXQX_RgXQ_mul	35
RgXQX_RgXQ_translate	33584
RgXQX_divrem	150282
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138694
RgXQX_red	503585
RgXQX_sqr	0
RgXQ_matrix_pow	2144
RgXQ_norm	2680
RgXQ_pow	102130
RgXQ_powers	7814
RgXQ_powu	97247
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	50943
RgXV_unscale	5475
RgXX_to_RgM	322
RgXY_degreex	1941508
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32347
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	349123
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	41538457
RgX_Rg_add_shallow	57298
RgX_Rg_div	29863667
RgX_Rg_divexact	2746812
RgX_Rg_eval_bk	0
RgX_Rg_mul	192133342
RgX_Rg_sub	1184576
RgX_Rg_translate	5700530
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5418653
RgX_Rg_translate_fast	5700528
RgX_Rg_translate_i	5418840
RgX_add	137893521
RgX_addmulXn	509096
RgX_addmulXn_shallow	8374527
RgX_addspec	216626
RgX_addspec_shallow	7812809
RgX_affine	30226
RgX_blocks	2793604
RgX_deflate	1004304
RgX_deriv	719184
RgX_digits	3157
RgX_div_by_X_x	231741
RgX_divrem	13919446
RgX_divrem_i	22389793
RgX_divs	2863
RgX_equal	24694074
RgX_even_odd	45035440
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	333900
RgX_inflate	850499
RgX_integXn	54511
RgX_liftred	450445
RgX_mul	104205540
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	168659
RgX_mul_fast	117977553
RgX_mul_i	37731750
RgX_mul_normalized	1422454
RgX_mulhigh_i	2674935
RgX_mulhigh_i2	1595393
RgX_muls	3196
RgX_mulspec	39151023
RgX_mulspec_basecase	33090371
RgX_mulspec_basecase_limb	106688825
RgX_neg	6277334
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138694
RgX_recip	30004
RgX_recip_i	3482331
RgX_recip_shallow	59388
RgX_recipspec_shallow	2495257
RgX_rem	13857804
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	13857791
RgX_renormalize_lg	7896983
RgX_rescale	3934369
RgX_rotate_shallow	317037
RgX_shift	1578029
RgX_shift_shallow	166714267
RgX_splitting	43631
RgX_sqr	1241462
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1253614
RgX_sqr_i	37961
RgX_sqrhigh_i	0
RgX_sqrhigh_i2	0
RgX_sqrspec	38039
RgX_sqrspec_basecase	38000
RgX_sqrspec_basecase_limb	100082
RgX_sub	66702988
RgX_to_RgC	13942216
RgX_unscale	50181
RgX_val	3678154
RgX_valrem	76071456
RgX_valrem_inexact	847157
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1286750
RgXn_div_gen	2192931
RgXn_div_i	1286750
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52127
RgXn_inv	807478
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	906398
RgXn_inv_i	906398
RgXn_mul	11097038
RgXn_mul2	9453356
RgXn_mul_basecase	6658643
RgXn_mulhigh	2620409
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	554035
RgXn_red_shallow	7946278
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	79535885
Rg_RgX_sub	4290632
Rg_get_0	6942919
Rg_get_1	156906537
Rg_to_RgC	1193469
ZXQX_dvd	15668
ZXQ_powers	10453
ZXQ_powu	168503
ZX_unscale	674286
ZX_unscale2n	1902989
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1160140
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	106195
_ZXQsqr	196730
_add	486505
_cmul	835582
_gen_add	19618991
_gen_cmul	512818
_gen_mul	1970985
_gen_nored	2145754
_gen_one	2189150
_gen_sqr	634970
_gen_sub	0
_gen_zero	24184
_mul	226658
_mulXn	4528
_one	827441
_oneXn	1939
_pow	88307
_red	557636
_sqr	68413
_sqrXn	11893
_sub	0
_zero	1010
_zeroXn	0
brent_kung_optpow	16365815
do_QXQ_eval	3512
gen_RgXQ_eval_powers	13197332
gen_bkeval	813209
gen_bkeval_powers	11396272
get_Rg_algebra	294792
rem	1050980
rfrac_deflate	140
rfrac_deflate_max	140
rfrac_deflate_order	140
zero_FpXQX_mod	616
zero_FpX_mod	102627

Generated by: LCOV version 1.16