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 30674-be81ecfdd4) Lines: 1624 1787 90.9 % Date: 2026-02-09 09:23:39 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	17734
RgX_homogenize	18102
QXQV_to_mod	22341
RgM_to_RgXX	23714
_gen_zero	24184
RgX_affine	30226
RgX_recip	30793
RgXY_swapspec	32773
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	52053
RgXn_expint	52920
RgX_integXn	56377
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65083
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74802
RgXV_to_RgM	79011
_pow	88307
zero_FpX_mod	91714
RgX_sqrspec_basecase_limb	100082
RgXQ_pow	102160
_ZXQmul	111181
RgXQ_powu	120410
RgXQX_pseudorem	138801
RgX_pseudorem	138801
RgXQX_divrem	156752
RgX_RgV_eval	166768
QXQ_to_mod	168329
ZXQ_powu	168507
RgX_mul_QXQX	170888
Kronecker_to_mod	185965
RgV_to_RgX_reverse	188283
_ZXQsqr	200593
QXQX_to_mod_shallow	204096
RgX_addspec	222396
RgX_div_by_X_x	264975
_mul	280942
get_Rg_algebra	294976
RgM_to_RgXV	302869
RgX_rotate_shallow	317037
RgV_to_RgM	336457
RgX_homogenous_evalpow	395387
RgX_RgXQ_eval	417398
RgX_liftred	454903
RgXQX_red	508139
_gen_cmul	512818
RgX_addmulXn	514866
RgXn_div	532507
RgX_mul_FpX	590660
_add	623213
_gen_sqr	635572
RgXn_recip_shallow	642509
ZX_unscale	674286
_red	724082
RgXn_inv	807480
RgX_deriv	830504
QXQ_to_mod_shallow	840695
RgX_valrem_inexact	852203
gen_bkeval	881443
RgX_inflate	885195
RgXn_inv_fast	906408
RgXn_inv_i	906408
_one	1019352
_cmul	1040360
rem	1050979
ZX_z_unscale	1171635
RgX_deflate	1185992
RgX_Rg_sub	1226047
RgXn_div_fast	1234821
RgXn_div_i	1234821
RgX_sqr	1299437
RgX_sqr_fast	1311589
Rg_to_RgC	1359986
RgX_shift	1577742
RgX_mulhigh_i2	1595393
RgX_mul_normalized	1720945
ZX_unscale2n	1974087
_gen_mul	1974510
RgXY_degreex	2022186
RgXn_div_gen	2141045
_gen_nored	2150464
_gen_one	2193324
RgV_to_RgX	2287444
RgXn_mulhigh	2569747
RgX_recipspec_shallow	2583250
RgX_mulhigh_i	2626139
RgX_blocks	2742935
RgX_mulXn	2997524
RgX_val	3678434
RgX_recip_i	3750734
RgX_rescale	4343778
Rg_RgX_sub	4953876
RgX_Rg_divexact	5264073
RgX_Rg_translate_basecase	5709545
RgX_Rg_translate_i	5709733
RgX_Rg_translate	6070735
RgX_Rg_translate_fast	6070735
RgXn_mul_basecase	6658643
Rg_get_0	6942940
RgX_neg	7450890
RgX_renormalize_lg	7795642
RgXn_red_shallow	7847877
RgX_addspec_shallow	8854352
RgXn_mul2	9379769
RgX_addmulXn_shallow	9529756
RgXn_mul	10922720
gen_bkeval_powers	12145131
gen_RgXQ_eval_powers	14036873
RgX_divrem	14176554
RgX_rem	14697843
RgX_rem_fast	14697862
RgX_to_RgC	15066948
brent_kung_optpow	19607437
_gen_add	19664692
RgX_divrem_i	23427215
RgX_equal	24798931
RgX_Rg_div	30724457
RgX_mulspec_basecase	34145967
RgX_mul_i	38775881
RgX_mulspec	40212479
RgX_Rg_add	42750504
RgX_even_odd	49759726
RgX_sub	72791684
RgX_valrem	80758302
RgXspec_kill0	81647228
RgX_mul	105387325
RgX_mulspec_basecase_limb	111282836
RgX_mul_fast	118936169
RgX_add	143377969
Rg_get_1	156953981
RgX_shift_shallow	177219556
RgX_Rg_mul	199299846

Generated by: LCOV version 1.16