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:

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 - ZX.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30848-b1463d63da) Lines: 726 806 90.1 %
Date: 2026-04-30 09:27:33 Functions: 95 106 89.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
FqM_mul_Kronecker 81851
Kronecker_to_ZXQX 24269
Kronecker_to_ZXX 1768066
QXQM_mul 5047
QXQM_sqr 7
QXQX_QXQ_mul 3318
QXQX_mul 13377
QXQX_powers 476
QXQX_sqr 1904
QX_ZX_rem 1904535
QX_mul 3805745
QX_sqr 109218
RgXX_to_Kronecker 6700301
RgXX_to_Kronecker_spec 10035617
RgXX_to_Kronecker_var 3164
RgX_check_QX 369773
RgX_check_ZX 2976638
RgX_check_ZXX 1022
Xpm1_powu 434
ZC_mod2BIL_FqC 305402
ZC_mod2BIL_ZXQC 14896
ZM_mod2BIL_FqM 81851
ZM_mod2BIL_ZXQM 6769
ZXC_eval2BIL 1092747
ZXC_expi 1092747
ZXM_eval2BIL 177100
ZXM_expi 177100
ZXQM_mul 6629
ZXQM_sqr 140
ZXQX_ZXQ_mul 8988
ZXQX_mul 22365
ZXQX_sqr 1904
ZXT_remi2n 45290
ZXV_ZX_fromdigits 0
ZXV_Z_mul 7476
ZXV_dotproduct 82943
ZXV_equal 28
ZXV_remi2n 0
ZXX_Z_add_shallow 0
ZXX_Z_divexact 56469
ZXX_Z_mul 8883
ZXX_evalx0 28548
ZXX_max_lg 5418
ZXX_mul_Kronecker 3028336
ZXX_renormalize 316690176
ZXX_sqr_Kronecker 5306
ZX_Z_add 87293
ZX_Z_add_shallow 94997
ZX_Z_divexact 5123233
ZX_Z_eval 524345
ZX_Z_mul 14447885
ZX_Z_sub 182124
ZX_Z_translate 3981680
ZX_Z_translate_basecase 3887912
ZX_add 38557721
ZX_affine 674992
ZX_copy 5846032
ZX_deriv 7933177
ZX_digits 0
ZX_div_by_X_1 21
ZX_divuexact 977795
ZX_equal 2580061
ZX_eval1 4718
ZX_eval2BIL 5557926
ZX_eval2BILspec 95490135
ZX_expi 5557926
ZX_expispec 172193343
ZX_max_lg 108119
ZX_mod_Xnm1 1735795
ZX_mul 84688453
ZX_mulspec 93151662
ZX_mulspec_mulii 38089494
ZX_mulu 121184
ZX_neg 599547
ZX_rem 11518248
ZX_remi2n 105749
ZX_rescale 36285
ZX_rescale2n 0
ZX_rescale_lt 0
ZX_shifti 6523397
ZX_sqr 139174482
ZX_sqrspec 139168127
ZX_sqrspec_basecase 76686371
ZX_sqrspec_basecase_limb 315938211
ZX_sqrspec_sqri 18021954
ZX_sub 29637645
ZX_val 336880
ZX_valrem 29388850
ZX_valspec 316958352
ZXn_mul 2603312
ZXn_sqr 1575
Z_XpN_powu 0
Z_ZX_mulshiftspec 38497056
Z_ZX_sub 2730853
Z_mod2BIL_Fq 1199133
Z_mod2BIL_ZX 57365611
Z_mod2BIL_ZXQ 65338
Z_sqrshiftspec_ZX 43749001
_ZX_add 0
_ZX_divrem 0
_ZX_mul 0
_ZX_sqr 0
scalar_ZX 56562
scalar_ZX_shallow 23051
zx_to_ZX 20923
zx_z_divexact 112

Generated by: LCOV version 1.16