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 30622-caa25a75db) Lines: 1631 1787 91.3 % Date: 2026-01-22 09:18:00 Functions: 205 223 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	185418
QXQC_to_mod_shallow	14854
QXQM_to_mod_shallow	6720
QXQV_to_mod	21701
QXQXV_to_mod	11347
QXQX_homogenous_evalpow	1652
QXQX_to_mod	33690
QXQX_to_mod_shallow	204071
QXQ_powers	8996
QXQ_to_mod	153924
QXQ_to_mod_shallow	840641
QXV_QXQ_eval	3242
QXY_QXQ_evalx	294
QX_ZXQV_eval	7441
RgM_to_RgXV	276030
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23708
RgV_to_RgM	319207
RgV_to_RgX	2159469
RgV_to_RgX_reverse	188283
RgXQC_red	68187
RgXQM_mul	322
RgXQM_red	13195
RgXQV_RgXQ_mul	127
RgXQV_factorback	7118
RgXQV_red	1408
RgXQX_RgXQ_mul	35
RgXQX_RgXQ_translate	33577
RgXQX_divrem	154041
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138248
RgXQX_red	507016
RgXQX_sqr	0
RgXQ_matrix_pow	2681
RgXQ_norm	2674
RgXQ_pow	102155
RgXQ_powers	8351
RgXQ_powu	108148
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	73910
RgXV_unscale	6120
RgXX_to_RgM	322
RgXY_degreex	1975975
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32567
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	379937
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42504223
RgX_Rg_add_shallow	56585
RgX_Rg_div	30369692
RgX_Rg_divexact	4824972
RgX_Rg_eval_bk	0
RgX_Rg_mul	197168760
RgX_Rg_sub	1207199
RgX_Rg_translate	5909510
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5574985
RgX_Rg_translate_fast	5909510
RgX_Rg_translate_i	5575175
RgX_add	141952596
RgX_addmulXn	514567
RgX_addmulXn_shallow	9159786
RgX_addspec	222097
RgX_addspec_shallow	8540684
RgX_affine	30226
RgX_blocks	2794365
RgX_deflate	1130121
RgX_deriv	797351
RgX_digits	3157
RgX_div_by_X_x	248548
RgX_divrem	14065403
RgX_divrem_i	22970642
RgX_divs	2863
RgX_equal	24749856
RgX_even_odd	47618998
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	381860
RgX_inflate	878941
RgX_integXn	55809
RgX_liftred	453809
RgX_mul	104971430
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	170341
RgX_mul_fast	118749569
RgX_mul_i	38423339
RgX_mul_normalized	1658203
RgX_mulhigh_i	2676995
RgX_mulhigh_i2	1595393
RgX_muls	3733
RgX_mulspec	39859088
RgX_mulspec_basecase	33792961
RgX_mulspec_basecase_limb	109838451
RgX_neg	7161376
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138248
RgX_recip	30541
RgX_recip_i	3615113
RgX_recip_shallow	59388
RgX_recipspec_shallow	2523514
RgX_rem	14303970
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14303970
RgX_renormalize_lg	7898506
RgX_rescale	4166062
RgX_rotate_shallow	317037
RgX_shift	1578012
RgX_shift_shallow	172765601
RgX_splitting	43631
RgX_sqr	1287549
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1299701
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	70383421
RgX_to_RgC	14644333
RgX_unscale	51161
RgX_val	3678154
RgX_valrem	78654680
RgX_valrem_inexact	850852
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1286750
RgXn_div_gen	2192925
RgXn_div_i	1286750
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52664
RgXn_inv	807478
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	906388
RgXn_inv_i	906388
RgXn_mul	11101154
RgXn_mul2	9453356
RgXn_mul_basecase	6658643
RgXn_mulhigh	2621170
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	582677
RgXn_red_shallow	7949369
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	80941196
Rg_RgX_sub	4733701
Rg_get_0	6942919
Rg_get_1	156953841
Rg_to_RgC	1306235
ZXQX_dvd	17291
ZXQ_powers	11548
ZXQ_powu	168498
ZX_unscale	674286
ZX_unscale2n	1943505
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1163371
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	109814
_ZXQsqr	199441
_add	564565
_cmul	944280
_gen_add	19557154
_gen_cmul	512818
_gen_mul	1966028
_gen_nored	2138421
_gen_one	2183028
_gen_sqr	634233
_gen_sub	0
_gen_zero	24184
_mul	262993
_mulXn	4528
_one	925993
_oneXn	1939
_pow	88307
_red	653467
_sqr	73247
_sqrXn	11893
_sub	0
_zero	1195
_zeroXn	0
brent_kung_optpow	18099850
do_QXQ_eval	3536
gen_RgXQ_eval_powers	13549619
gen_bkeval	843691
gen_bkeval_powers	11670821
get_Rg_algebra	294583
rem	1048813
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