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 30703-cd958ce78c) Lines: 1624 1787 90.9 % Date: 2026-02-23 09:22:43 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	6489
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	17732
RgX_homogenize	18102
QXQV_to_mod	22338
RgM_to_RgXX	23714
_gen_zero	24184
RgX_affine	30226
RgX_recip	30793
RgXY_swapspec	32771
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	52058
RgXn_expint	52920
RgX_integXn	56378
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65079
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74805
RgXV_to_RgM	79010
_pow	88307
zero_FpX_mod	91714
RgX_sqrspec_basecase_limb	100082
RgXQ_pow	102160
_ZXQmul	111146
RgXQ_powu	120432
RgXQX_pseudorem	138801
RgX_pseudorem	138801
RgXQX_divrem	156752
RgX_RgV_eval	166768
QXQ_to_mod	168329
ZXQ_powu	168431
RgX_mul_QXQX	170888
Kronecker_to_mod	185965
RgV_to_RgX_reverse	188283
_ZXQsqr	200501
QXQX_to_mod_shallow	204096
RgX_addspec	222428
RgX_div_by_X_x	264971
_mul	280934
get_Rg_algebra	295006
RgM_to_RgXV	302874
RgX_rotate_shallow	317037
RgV_to_RgM	336460
RgX_homogenous_evalpow	395381
RgX_RgXQ_eval	417398
RgX_liftred	454903
RgXQX_red	508139
_gen_cmul	512818
RgX_addmulXn	514898
RgXn_div	532507
RgX_mul_FpX	590660
_add	623208
_gen_sqr	635805
RgXn_recip_shallow	642565
ZX_unscale	674356
_red	724067
RgXn_inv	807483
RgX_deriv	830515
QXQ_to_mod_shallow	840695
RgX_valrem_inexact	852201
gen_bkeval	881459
RgX_inflate	885179
RgXn_inv_fast	906415
RgXn_inv_i	906416
_one	1019329
_cmul	1040343
rem	1050985
ZX_z_unscale	1171703
RgX_deflate	1185986
RgX_Rg_sub	1226035
RgXn_div_fast	1234821
RgXn_div_i	1234821
RgX_sqr	1299454
RgX_sqr_fast	1311606
Rg_to_RgC	1360009
RgX_shift	1577742
RgX_mulhigh_i2	1595393
RgX_mul_normalized	1720975
ZX_unscale2n	1974247
_gen_mul	1975793
RgXY_degreex	2022220
RgXn_div_gen	2141048
_gen_nored	2151869
_gen_one	2194401
RgV_to_RgX	2287459
RgXn_mulhigh	2569747
RgX_recipspec_shallow	2582962
RgX_mulhigh_i	2626136
RgX_blocks	2742935
RgX_mulXn	2997531
RgX_val	3678518
RgX_recip_i	3750669
RgX_rescale	4343853
Rg_RgX_sub	4954008
RgX_Rg_divexact	5263636
RgX_Rg_translate_basecase	5709563
RgX_Rg_translate_i	5709751
RgX_Rg_translate	6070749
RgX_Rg_translate_fast	6070749
RgXn_mul_basecase	6658643
Rg_get_0	6942940
RgX_neg	7450842
RgX_renormalize_lg	7795643
RgXn_red_shallow	7847879
RgX_addspec_shallow	8854507
RgXn_mul2	9379769
RgX_addmulXn_shallow	9529841
RgXn_mul	10922726
gen_bkeval_powers	12145652
gen_RgXQ_eval_powers	14038131
RgX_divrem	14176674
RgX_rem_fast	14698198
RgX_rem	14698203
RgX_to_RgC	15067007
brent_kung_optpow	19602790
_gen_add	19670876
RgX_divrem_i	23427686
RgX_equal	24798980
RgX_Rg_div	30724490
RgX_mulspec_basecase	34146528
RgX_mul_i	38776283
RgX_mulspec	40212972
RgX_Rg_add	42750596
RgX_even_odd	49757781
RgX_sub	72790995
RgX_valrem	80754352
RgXspec_kill0	81648164
RgX_mul	105387709
RgX_mulspec_basecase_limb	111284424
RgX_mul_fast	118936643
RgX_add	143377947
Rg_get_1	156954056
RgX_shift_shallow	177216385
RgX_Rg_mul	199298926

Generated by: LCOV version 1.16