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 - FlxX.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 80.5 % 1492 1201 Test Date: 2026-07-22 22:45:42 Functions: 75.5 % 200 151 Legend: Lines:     hit not hit

Function Name	Hit count
FlxXC_sub	0
FlxXM_to_ZXXM	0
FlxXV_to_FlxM	0
FlxX_translate1	0
FlxX_triple	0
FlxY_Flx_div	0
FlxY_Flx_mul	0
FlxY_Flx_mul_pre	0
FlxY_Flx_translate	0
FlxY_FlxqV_evalx	0
FlxY_Flxq_evalx	0
FlxY_Flxq_evalx_pre	0
FlxqXC_FlxqXQV_eval	0
FlxqXC_FlxqXQV_eval_pre	0
FlxqXC_FlxqXQ_eval	0
FlxqXQ_autpow	0
FlxqXQ_autsum	0
FlxqXQ_auttrace	0
FlxqXQ_div	0
FlxqXQ_div_pre	0
FlxqXQ_invsafe	0
FlxqXQ_matrix_pow	0
FlxqXQ_powers	0
FlxqXQ_powu	0
FlxqXQ_sqr	0
FlxqX_FlxqXQV_eval	0
FlxqX_FlxqXQ_eval	0
FlxqX_Flxq_mul	0
FlxqX_Flxq_mul_to_monic	0
FlxqX_Newton	0
FlxqX_eval	0
FlxqX_fromNewton	0
FlxqX_halfgcd	0
FlxqX_halfres	0
FlxqX_halfres_update	0
FlxqX_powu	0
FlxqX_red	0
FlxqXn_div	0
FlxqXn_expint	0
FlxqXn_inv	0
FlxqXn_mul	0
FlxqXn_sqr	0
FlxqXn_sqr_pre	0
Kronecker_to_FlxqX	0
ZXXV_to_FlxXV	0
_FlxqX_add	0
get_FlxqX_algebra	0
matJ2_FlxXM	0
zlxX_translate1	0
FlxqX_halfgcd_all	7
FlxqXQ_inv	14
FlxqXQ_inv_pre	14
FlxqXQ_invsafe_pre	14
FlxqX_disc	14
matid2_FlxXM	16
FlxqXQ_auttrace_sqr	20
FlxqXQ_auttrace_mul	27
FlxqXQ_pow	35
FlxqX_resultant	56
FlxqX_resultant_basecase	56
FlxqX_resultant_pre	56
FlxqXQ_minpoly	62
FlxqX_invBarrett	62
FlxqXQ_pow_pre	105
FlxqX_normalize	133
FlxqX_extgcd_halfgcd	143
FlxqXQ_minpoly_pre	225
FlxY_evalx	238
FlxY_Flx_add	245
FlxqX_halfgcd_pre	254
polxn_FlxX	254
_FlxqXQ_zero	281
FlxqX_get_red	336
FlxqXQ_auttrace_pre	338
ZXXT_to_FlxXT	442
FlxqXQ_transmul_init	508
random_FlxqX	592
FlxX_Fl_mul	684
FlxX_double	684
get_FlxqXQ_algebra	684
FlxqX_halfgcd_all_i	792
FlxqX_halfgcd_all_pre	792
FlxqXQ_transmul	1077
FlxX_Laplace	1216
FlxqX_composedsum	1216
FlxqX_fromNewton_pre	1216
FlxqXn_expint_pre	1216
FlxqX_sqr	1218
_FlxqXQ_red	1248
FlxqX_invBarrett_basecase	1391
FlxqXQ_mul	1800
FlxX_invLaplace	2432
FlxqX_Newton_pre	2432
FlxqXn_div_pre	2432
FlxqXn_inv_pre	2432
FlxX_neg	2538
Fly_to_FlxY	2612
FlxqXM_mul2	3276
FlxqX_FlxqXM_qmul	3276
FlxqX_halfres_split	3366
FlxqX_halfres_basecase	4052
FlxqXQ_autpow_mul	4274
FlxX_integXn	4804
_FlxqX_sub	4868
FlxqX_rem	5109
FlxXn_recip	6080
FlxqXM_FlxqX_mul2	6626
FlxqX_halfres_i	7418
FlxY_Flx_div_pre	7808
FlxqX_invBarrett_Newton	8354
FlxqX_invBarrett_pre	9745
FlxqX_powu_pre	10262
_FlxqX_sqr	10339
FlxYqq_mul	10406
FlxqX_saferesultant	11038
FlxY_Flx_sub	11703
FlxqXQ_autsum_pre	12110
FlxXC_to_ZXXC	12516
FlxX_blocks	13195
FlxqXn_mulhigh	13195
FlxqX_addmulmul	13562
FlxqX_mulhigh_i	18000
FlxqXQ_autsum_sqr	18401
FlxqX_gcd	24557
FlxqXQ_autsum_mul	29759
FlxqV_roots_to_deg1	32140
FlxqV_roots_to_pol	32140
FlxYqq_pow	39264
FlxqXn_mul_pre	40415
FlxqX_div_by_X_x	51898
FlxqX_div_by_X_x_pre	51898
FlxX_to_Flm	58347
FlxqX_mul	63936
FlxXn_red	66180
FlxqXQ_autpow_pre	69996
FlxX_shift	71638
FlxqXQ_autpow_sqr	73445
FlxqX_FlxqXQ_eval_pre	78081
FlxYqq_sqr	80553
FlxqXQ_powu_pre	82722
FlxX_deriv	85570
FlxYqq_redswap	90959
FlxqX_safegcd	97923
Flxq_addmul_pre	103796
FlxqXQ_powers_pre	109278
_FlxqXQ_one	112026
FlxqX_divrem_Barrett	125966
FlxX_subspec	132746
FlxqX_divrem_Barrettspec	133019
FlxqX_extgcd	134227
FlxqX_extgcd_basecase	134237
FlxqX_extgcd_pre	134241
FlxY_FlxqV_evalx_pre	137237
FlxXV_to_FlxM_lg	139112
FlxX_blocks_FlxM	139112
FlxqX_FlxqXQV_eval_pre	139112
FlxqX_Flxq_mul_pre	155534
RgX_to_FlxqX	166253
FlxqX_gcd_basecase	167928
FlxqX_gcd_pre	177830
FlxX_swap	181910
_FlxqXQ_mul	184836
FlxqX_normalize_pre	190026
Flm_to_FlxX	222033
FlxqXV_prod	223083
_FlxqXQ_sqr	271087
FlxqXQ_sqr_pre	271535
FlxX_recipspec	281996
FlxX_to_FlxC	328131
FlxqX_mulspec	357688
FlxX_add	360094
FlxqX_sqr_pre	363645
FlxX_to_Flx	378162
FlxqX_saferem	385039
FlxX_lgrenormalizespec	400717
FlxqXQ_mul_pre	487855
FlxqX_get_red_pre	495992
_FlxqX_mul	538508
FlxX_sub	626180
FlxqX_Flxq_mul_to_monic_pre	672998
polx_FlxX	692005
pol1_FlxX	760661
FlxqX_divrem	1078519
FlxqX_red_pre	1294103
FlxqX_divrem_pre	1583051
FlxqX_mul_pre	1729274
FlxqX_rem_pre	2116270
Kronecker_to_FlxqX_pre	2450573
FlxX_to_ZXX	2781279
zxX_to_FlxX	2861879
FlxY_degreex	3066158
FlxqX_divrem_basecase	3219355
get_FlxqX_red	3699820
zxX_to_Kronecker	3822170
zxX_to_Kronecker_spec	4537532
ZXX_to_FlxX	4705788
FlxY_eval_powers_pre	7587254
FlxY_evalx_powers_pre	11309079
FlxY_evalx_pre	14260740
FlxX_renormalize	17960829

Generated by: LCOV version 2.0-1