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 30536-6f6fcf9613) Lines: 1631 1787 91.3 % Date: 2025-11-02 09:21:49 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
RgXn_sqr2	315
RgXQM_mul	322
RgXX_to_RgM	322
QXY_QXQ_evalx	371
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	2940
RgXV_RgV_eval	2947
RgX_digits	3157
QXV_QXQ_eval	3241
do_QXQ_eval	3612
RgXY_derivx	3836
RgX_muls	3992
_mulXn	4528
RgXn_eval	5187
RgXV_unscale	6559
QXQM_to_mod_shallow	6720
RgXQV_factorback	7118
RgM_to_RgXV_reverse	7202
QX_ZXQV_eval	7595
RgXQ_powers	8610
QXQ_powers	9589
_RgX_divrem	11333
RgX_pseudodivrem	11818
_sqrXn	11893
RgXQX_pseudodivrem	12063
ZXQ_powers	12144
RgXn_sqr	12152
QXQXV_to_mod	12733
ZX_unscale_div	12997
RgXQM_red	13195
RgX_sqr_QXQX	13425
QXQC_to_mod_shallow	14854
ZXQX_dvd	17734
RgX_homogenize	18732
QXQV_to_mod	22339
RgM_to_RgXX	23686
_gen_zero	24184
RgX_affine	30212
RgX_recip	31423
RgXY_swapspec	32773
RgXQX_RgXQ_translate	33584
QXQX_to_mod	37471
RgX_sqr_i	37961
RgX_sqrspec_basecase	38000
RgX_sqrspec	38039
RgX_normalize	39711
RgX_splitting	43631
RgX_rem_QXQX	49851
RgX_unscale	51890
RgXn_expint	52917
RgX_integXn	56373
RgX_recip_shallow	59388
RgX_Rg_add_shallow	65111
RgX_mul2n	65268
RgXQC_red	68187
RgX_rem_FpX	68327
_sqr	74879
RgXV_to_RgM	79031
_pow	88307
RgX_sqrspec_basecase_limb	100082
RgXQ_pow	102160
zero_FpX_mod	102627
_ZXQmul	111194
RgXQ_powu	120511
RgXQX_pseudorem	138871
RgX_pseudorem	138871
RgXQX_divrem	156857
RgX_RgV_eval	166768
ZXQ_powu	168505
QXQ_to_mod	169946
RgX_mul_QXQX	170888
Kronecker_to_mod	185965
RgV_to_RgX_reverse	188283
_ZXQsqr	200606
QXQX_to_mod_shallow	204096
RgX_addspec	222393
RgX_div_by_X_x	265480
_mul	281007
get_Rg_algebra	294964
RgM_to_RgXV	303242
RgX_rotate_shallow	317037
RgV_to_RgM	336721
RgX_homogenous_evalpow	398912
RgX_RgXQ_eval	417530
RgX_liftred	454903
RgXQX_red	508139
_gen_cmul	512818
RgX_addmulXn	514863
RgXn_div	584450
RgX_mul_FpX	609812
_add	623412
_gen_sqr	635403
RgXn_recip_shallow	643099
ZX_unscale	674286
_red	724322
RgXn_inv	807478
RgX_deriv	830947
QXQ_to_mod_shallow	840695
RgX_valrem_inexact	852371
gen_bkeval	881698
RgX_inflate	885468
RgXn_inv_fast	905247
RgXn_inv_i	905247
_one	1019755
_cmul	1040663
rem	1050966
ZX_z_unscale	1171631
RgX_deflate	1188003
RgX_Rg_sub	1226101
RgXn_div_fast	1284113
RgXn_div_i	1284113
RgX_sqr	1299218
RgX_sqr_fast	1311370
Rg_to_RgC	1360775
RgX_shift	1578036
RgX_mulhigh_i2	1589510
RgX_mul_normalized	1719197
_gen_mul	1974014
ZX_unscale2n	1974190
RgXY_degreex	2022615
_gen_nored	2150180
RgXn_div_gen	2189144
_gen_one	2193254
RgV_to_RgX	2289059
RgX_recipspec_shallow	2584112
RgXn_mulhigh	2614827
RgX_mulhigh_i	2671217
RgX_blocks	2788512
RgX_mulXn	2997279
RgX_val	3667912
RgX_recip_i	3751786
RgX_rescale	4344707
Rg_RgX_sub	4954582
RgX_Rg_divexact	5262408
RgX_Rg_translate_basecase	5703369
RgX_Rg_translate_i	5703558
RgX_Rg_translate	6065136
RgX_Rg_translate_fast	6065136
RgXn_mul_basecase	6633454
Rg_get_0	6942982
RgX_neg	7451383
RgX_renormalize_lg	7886717
RgXn_red_shallow	7944222
RgX_addspec_shallow	8851631
RgXn_mul2	9420016
RgX_addmulXn_shallow	9527311
RgXn_mul	11067734
gen_bkeval_powers	12144836
gen_RgXQ_eval_powers	14037488
RgX_divrem	14181221
RgX_rem_fast	14700582
RgX_rem	14700590
RgX_to_RgC	15067296
brent_kung_optpow	19600822
_gen_add	19647080
RgX_divrem_i	23433406
RgX_equal	24796935
RgX_Rg_div	30729702
RgX_mulspec_basecase	34207896
RgX_mul_i	38837680
RgX_mulspec	40274234
RgX_Rg_add	42746537
RgX_even_odd	49763540
RgX_sub	72853080
RgX_valrem	80752163
RgXspec_kill0	81720487
RgX_mul	105469436
RgX_mulspec_basecase_limb	111265195
RgX_mul_fast	119208386
RgX_add	143426797
Rg_get_1	156956993
RgX_shift_shallow	177391597
RgX_Rg_mul	199288844

Generated by: LCOV version 1.16