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 30601-812dd05845) Lines: 1633 1787 91.4 % Date: 2026-01-06 09:22:34 Functions: 205 223 91.9 % Legend: Lines: hit not hit

Function Name	Hit count
Kronecker_to_mod	185965
QXQC_to_mod_shallow	14854
QXQM_to_mod_shallow	6720
QXQV_to_mod	22340
QXQXV_to_mod	12572
QXQX_homogenous_evalpow	1652
QXQX_to_mod	37212
QXQX_to_mod_shallow	204096
QXQ_powers	9506
QXQ_to_mod	168329
QXQ_to_mod_shallow	840695
QXV_QXQ_eval	3248
QXY_QXQ_evalx	294
QX_ZXQV_eval	7455
RgM_to_RgXV	302872
RgM_to_RgXV_reverse	7202
RgM_to_RgXX	23714
RgV_to_RgM	336456
RgV_to_RgX	2286925
RgV_to_RgX_reverse	188283
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	156752
RgXQX_mul	0
RgXQX_powers	0
RgXQX_pseudodivrem	12063
RgXQX_pseudorem	138802
RgXQX_red	508139
RgXQX_sqr	0
RgXQ_matrix_pow	2933
RgXQ_norm	2680
RgXQ_pow	102160
RgXQ_powers	8603
RgXQ_powu	120410
RgXQ_trace	476
RgXV_RgV_eval	2947
RgXV_maxdegree	588
RgXV_prod	0
RgXV_rescale	2401
RgXV_to_RgM	79011
RgXV_unscale	6489
RgXX_to_RgM	322
RgXY_degreex	2022129
RgXY_derivx	3836
RgXY_swap	2051
RgXY_swapspec	32769
RgX_RgV_eval	166768
RgX_RgXQV_eval	0
RgX_RgXQ_eval	417406
RgX_RgXnV_eval	966
RgX_RgXn_eval	0
RgX_Rg_add	42744904
RgX_Rg_add_shallow	65082
RgX_Rg_div	30725228
RgX_Rg_divexact	5263529
RgX_Rg_eval_bk	0
RgX_Rg_mul	199276695
RgX_Rg_sub	1226027
RgX_Rg_translate	6070521
RgX_Rg_translate_FpX	0
RgX_Rg_translate_FpXQX	7
RgX_Rg_translate_basecase	5709349
RgX_Rg_translate_fast	6070522
RgX_Rg_translate_i	5709537
RgX_add	143430942
RgX_addmulXn	514863
RgX_addmulXn_shallow	9529431
RgX_addspec	222393
RgX_addspec_shallow	8854105
RgX_affine	30226
RgX_blocks	2794675
RgX_deflate	1185970
RgX_deriv	830459
RgX_digits	3157
RgX_div_by_X_x	264973
RgX_divrem	14180461
RgX_divrem_i	23430575
RgX_divs	2863
RgX_equal	24798911
RgX_even_odd	49759948
RgX_homogenize	18102
RgX_homogenize_deg	1260
RgX_homogenous_evalpow	395435
RgX_inflate	885287
RgX_integXn	56372
RgX_liftred	454903
RgX_mul	105480519
RgX_mul2n	65268
RgX_mulXn	2997279
RgX_mul_FpX	609812
RgX_mul_FpXQX	2079
RgX_mul_QXQX	170888
RgX_mul_fast	119261272
RgX_mul_i	38849228
RgX_mul_normalized	1720930
RgX_mulhigh_i	2677866
RgX_mulhigh_i2	1595393
RgX_muls	3985
RgX_mulspec	40285811
RgX_mulspec_basecase	34219378
RgX_mulspec_basecase_limb	111354243
RgX_neg	7450838
RgX_normalize	39711
RgX_pseudodivrem	11818
RgX_pseudorem	138802
RgX_recip	30793
RgX_recip_i	3750676
RgX_recip_shallow	59388
RgX_recipspec_shallow	2583313
RgX_rem	14697445
RgX_rem_FpX	68327
RgX_rem_FpXQX	70
RgX_rem_QXQX	49851
RgX_rem_fast	14697441
RgX_renormalize_lg	7899124
RgX_rescale	4343520
RgX_rotate_shallow	317037
RgX_shift	1578036
RgX_shift_shallow	177387933
RgX_splitting	43631
RgX_sqr	1299245
RgX_sqr_FpX	1407
RgX_sqr_FpXQX	196
RgX_sqr_QXQX	13425
RgX_sqr_fast	1311397
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	72848042
RgX_to_RgC	15066561
RgX_unscale	52058
RgX_val	3678154
RgX_valrem	80747731
RgX_valrem_inexact	852203
RgXnV_red_shallow	483
RgXn_div	584450
RgXn_div_FpX	119
RgXn_div_FpXQX	7
RgXn_div_fast	1286750
RgXn_div_gen	2192921
RgXn_div_i	1286750
RgXn_eval	5593
RgXn_exp	0
RgXn_expint	52915
RgXn_inv	807471
RgXn_inv_FpX	91
RgXn_inv_FpXQX	0
RgXn_inv_fast	906389
RgXn_inv_i	906389
RgXn_mul	11102894
RgXn_mul2	9453356
RgXn_mul_basecase	6658643
RgXn_mulhigh	2621480
RgXn_powers	483
RgXn_powu	0
RgXn_powu_i	2286
RgXn_recip_shallow	642509
RgXn_red_shallow	7950613
RgXn_reverse	154
RgXn_sqr	12152
RgXn_sqr2	315
RgXn_sqr_basecase	0
RgXn_sqrhigh	14
RgXn_sqrt	7
RgXspec_kill0	81793858
Rg_RgX_sub	4953625
Rg_get_0	6942919
Rg_get_1	156958812
Rg_to_RgC	1359967
ZXQX_dvd	17734
ZXQ_powers	12061
ZXQ_powu	168428
ZX_unscale	674286
ZX_unscale2n	1974081
ZX_unscale_div	12997
ZX_unscale_divpow	1393
ZX_z_unscale	1171604
_RgX_divrem	11333
_RgX_mul	0
_ZXQmul	111145
_ZXQsqr	200504
_add	623209
_cmul	1040364
_gen_add	19660898
_gen_cmul	512818
_gen_mul	1974201
_gen_nored	2150090
_gen_one	2193169
_gen_sqr	635355
_gen_sub	0
_gen_zero	24184
_mul	280940
_mulXn	4528
_one	1019357
_oneXn	1939
_pow	88307
_red	724076
_sqr	74800
_sqrXn	11893
_sub	0
_zero	1232
_zeroXn	0
brent_kung_optpow	19602472
do_QXQ_eval	3542
gen_RgXQ_eval_powers	14035126
gen_bkeval	881479
gen_bkeval_powers	12143234
get_Rg_algebra	294948
rem	1050982
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