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 30610-dfc8ed42cd) Lines: 1631 1787 91.3 % Date: 2026-01-14 09:22:13 Functions: 205 223 91.9 % 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_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_div_FpXQX	7
RgXn_sqrt	7
RgXn_sqrhigh	14
RgXQX_RgXQ_mul	35
RgX_rem_FpXQX	70
RgXn_inv_FpX	91
RgXn_div_FpX	119
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	3157
QXV_QXQ_eval	3248
do_QXQ_eval	3542
RgXY_derivx	3836
RgX_muls	3985
_mulXn	4528
RgXn_eval	5593
RgXV_unscale	6487
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	11333
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	22341
RgM_to_RgXX	23714
_gen_zero	24184
RgX_affine	30226
RgX_recip	30793
RgXY_swapspec	32769
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	52056
RgXn_expint	52917
RgX_integXn	56374
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65082
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74804
RgXV_to_RgM	79011
_pow	88307
RgX_sqrspec_basecase_limb	100082
RgXQ_pow	102160
zero_FpX_mod	102627
_ZXQmul	111181
RgXQ_powu	120402
RgXQX_pseudorem	138802
RgX_pseudorem	138802
RgXQX_divrem	156752
RgX_RgV_eval	166768
QXQ_to_mod	168329
ZXQ_powu	168497
RgX_mul_QXQX	170888
Kronecker_to_mod	185965
RgV_to_RgX_reverse	188283
_ZXQsqr	200584
QXQX_to_mod_shallow	204096
RgX_addspec	222393
RgX_div_by_X_x	264965
_mul	280941
get_Rg_algebra	294906
RgM_to_RgXV	302860
RgX_rotate_shallow	317037
RgV_to_RgM	336454
RgX_homogenous_evalpow	395378
RgX_RgXQ_eval	417398
RgX_liftred	454903
RgXQX_red	508139
_gen_cmul	512818
RgX_addmulXn	514863
RgXn_div	584450
RgX_mul_FpX	609812
_add	623213
_gen_sqr	635264
RgXn_recip_shallow	642496
ZX_unscale	674286
_red	724073
RgXn_inv	807480
RgX_deriv	830439
QXQ_to_mod_shallow	840695
RgX_valrem_inexact	852201
gen_bkeval	881461
RgX_inflate	885303
RgXn_inv_fast	906399
RgXn_inv_i	906399
_one	1019350
_cmul	1040360
rem	1050978
ZX_z_unscale	1171606
RgX_deflate	1185949
RgX_Rg_sub	1226013
RgXn_div_fast	1286750
RgXn_div_i	1286750
RgX_sqr	1299188
RgX_sqr_fast	1311340
Rg_to_RgC	1359951
RgX_shift	1578036
RgX_mulhigh_i2	1595393
RgX_mul_normalized	1720919
ZX_unscale2n	1974008
_gen_mul	1974021
RgXY_degreex	2022096
_gen_nored	2149809
_gen_one	2192552
RgXn_div_gen	2192929
RgV_to_RgX	2286915
RgX_recipspec_shallow	2583366
RgXn_mulhigh	2621480
RgX_mulhigh_i	2677869
RgX_blocks	2794675
RgX_mulXn	2997279
RgX_val	3678154
RgX_recip_i	3750615
RgX_rescale	4343403
Rg_RgX_sub	4953490
RgX_Rg_divexact	5262950
RgX_Rg_translate_basecase	5709220
RgX_Rg_translate_i	5709411
RgX_Rg_translate_fast	6070389
RgX_Rg_translate	6070390
RgXn_mul_basecase	6658643
Rg_get_0	6942919
RgX_neg	7450686
RgX_renormalize_lg	7899129
RgXn_red_shallow	7950625
RgX_addspec_shallow	8853891
RgXn_mul2	9453356
RgX_addmulXn_shallow	9529119
RgXn_mul	11102908
gen_bkeval_powers	12143108
gen_RgXQ_eval_powers	14034858
RgX_divrem	14180371
RgX_rem_fast	14697141
RgX_rem	14697155
RgX_to_RgC	15066461
brent_kung_optpow	19602081
_gen_add	19652476
RgX_divrem_i	23430301
RgX_equal	24798910
RgX_Rg_div	30725009
RgX_mulspec_basecase	34219021
RgX_mul_i	38848873
RgX_mulspec	40285453
RgX_Rg_add	42744747
RgX_even_odd	49751746
RgX_sub	72842316
RgX_valrem	80744130
RgXspec_kill0	81793168
RgX_mul	105480134
RgX_mulspec_basecase_limb	111353058
RgX_mul_fast	119260914
RgX_add	143428487
Rg_get_1	156958813
RgX_shift_shallow	177375553
RgX_Rg_mul	199275222

Generated by: LCOV version 1.16