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 - FpXX.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 76.8 % 1229 944 Test Date: 2026-07-23 17:04:59 Functions: 84.4 % 135 114 Legend: Lines:     hit not hit

Function Name	Hit count
FpXQXM_FpXQX_mul2	376
FpXQXM_mul2	161
FpXQXQ_autpow	493
FpXQXQ_autpow_mul	325
FpXQXQ_autpow_sqr	507
FpXQXQ_autsum	1184
FpXQXQ_autsum_mul	1316
FpXQXQ_autsum_sqr	1198
FpXQXQ_auttrace	8
FpXQXQ_auttrace_mul	1
FpXQXQ_auttrace_sqr	1
FpXQXQ_div	0
FpXQXQ_inv	0
FpXQXQ_invsafe	0
FpXQXQ_matrix_pow	0
FpXQXQ_minpoly	44
FpXQXQ_mul	48020
FpXQXQ_pow	1859
FpXQXQ_powers	1848
FpXQXQ_sqr	170827
FpXQXQ_transmul	200
FpXQXQ_transmul_init	88
FpXQXT_red	0
FpXQXV_FpXQX_fromdigits	189
FpXQXV_prod	16716
FpXQXV_red	0
FpXQX_FpXQXM_qmul	161
FpXQX_FpXQXQV_eval	3957
FpXQX_FpXQXQ_eval	855
FpXQX_FpXQ_mul	550853
FpXQX_addmulmul	752
FpXQX_digits	623
FpXQX_disc	35
FpXQX_div_by_X_x	69699
FpXQX_divrem	1077825
FpXQX_divrem_Barrett	82290
FpXQX_divrem_Barrettspec	150350
FpXQX_divrem_basecase	172542
FpXQX_dotproduct	396
FpXQX_extgcd	134218
FpXQX_extgcd_basecase	0
FpXQX_extgcd_halfgcd	0
FpXQX_gcd	14664
FpXQX_gcd_basecase	3870
FpXQX_get_red	12167
FpXQX_halfgcd	44
FpXQX_halfgcd_all	114
FpXQX_halfgcd_all_i	114
FpXQX_halfres	0
FpXQX_halfres_basecase	275
FpXQX_halfres_i	490
FpXQX_halfres_split	215
FpXQX_halfres_update	0
FpXQX_invBarrett	3529
FpXQX_invBarrett_Newton	537
FpXQX_invBarrett_basecase	2971
FpXQX_mul	1350155
FpXQX_mulhigh_i	6881
FpXQX_mulspec	1656816
FpXQX_powu	56
FpXQX_recipspec	248
FpXQX_red	1927223
FpXQX_rem	256615
FpXQX_resultant	63
FpXQX_resultant_basecase	28
FpXQX_sqr	180858
FpXQX_to_mod	532
FpXQX_to_mod_raw	0
FpXQXn_div	658
FpXQXn_exp	0
FpXQXn_expint	178
FpXQXn_inv	658
FpXQXn_mul	41367
FpXQXn_mulhigh	4368
FpXQXn_sqr	0
FpXX_FpX_mul	125115
FpXX_FpX_mulspec	140194
FpXX_Fp_mul	56546
FpXX_Fp_sub	0
FpXX_add	441507
FpXX_deriv	12978
FpXX_halve	2079
FpXX_integ	0
FpXX_integXn	763
FpXX_mulu	7074
FpXX_neg	2017
FpXX_recipspec	300700
FpXX_red	40693
FpXX_shift	18279
FpXX_sub	29848
FpXX_subspec	149377
FpXXn_red	7861
FpXYQQ_mul	196
FpXYQQ_pow	182
FpXYQQ_redswap	476
FpXYQQ_sqr	280
FpXY_FpXQV_evalx	3618
FpXY_FpXQ_evalx	154
FpXY_FpY_mulspec	15079
FpXY_eval	13657
FpXY_evalx	51513
FpXY_evaly	18799
FqXC_to_mod	14
FqXC_to_mod_raw	0
FqXM_to_mod	0
FqX_to_mod_raw	0
Fq_addmul	35602
Kronecker_to_FpXQX	1842875
ZXX_copy	126
ZXX_is_ZX	235889
ZXX_is_ZX_spec	3549521
ZXX_lgrenormalizespec	311101
ZlXQXn_expint	658
ZlXX_integXn	2513
_FpXQXQ_cmul	125138
_FpXQXQ_mul	44890
_FpXQXQ_one	18647
_FpXQXQ_red	19370
_FpXQXQ_sqr	170827
_FpXQXQ_zero	125
_FpXQX_add	121495
_FpXQX_divrem	9954
_FpXQX_mul	118634
_FpXQX_sqr	1729
_FpXQX_sub	4491
get_FpXQXQ_algebra	331
get_FpXQX_algebra	0
get_FpXQX_red	1334528
matJ2_FpXQXM	0
matid2_FpXQXM	0
polxn_FpXX	44
random_FpXQX	52
to_FlxqX	1256078
to_ZX	51968
to_intmod	2191

Generated by: LCOV version 2.0-1