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 30764-6b81f1f3fa) Lines: 726 806 90.1 %
Date: 2026-03-23 09:27:26 Functions: 95 106 89.6 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
ZXV_ZX_fromdigits 0
ZXV_remi2n 0
ZXX_Z_add_shallow 0
ZX_digits 0
ZX_rescale2n 0
ZX_rescale_lt 0
Z_XpN_powu 0
_ZX_add 0
_ZX_divrem 0
_ZX_mul 0
_ZX_sqr 0
QXQM_sqr 7
ZX_div_by_X_1 21
ZXV_equal 28
zx_z_divexact 112
ZXQM_sqr 140
Xpm1_powu 434
QXQX_powers 476
RgX_check_ZXX 1022
ZXn_sqr 1575
QXQX_sqr 1904
ZXQX_sqr 1904
RgXX_to_Kronecker_var 3164
QXQX_QXQ_mul 3318
ZX_eval1 4718
QXQM_mul 4795
ZXX_sqr_Kronecker 5306
ZXX_max_lg 5368
ZXQM_mul 6286
ZM_mod2BIL_ZXQM 6426
ZXV_Z_mul 7476
ZXX_Z_mul 8883
ZXQX_ZXQ_mul 8988
QXQX_mul 13377
ZC_mod2BIL_ZXQC 14210
zx_to_ZX 20923
ZXQX_mul 22365
scalar_ZX_shallow 23051
Kronecker_to_ZXQX 24269
ZXX_evalx0 28548
ZX_rescale 36290
ZXT_remi2n 45298
ZXX_Z_divexact 56469
scalar_ZX 56562
Z_mod2BIL_ZXQ 63966
FqM_mul_Kronecker 81851
ZM_mod2BIL_FqM 81851
ZXV_dotproduct 82943
ZX_Z_add 87293
ZX_Z_add_shallow 95001
QX_sqr 95750
ZX_remi2n 105753
ZX_max_lg 107850
ZX_mulu 121184
ZXM_eval2BIL 176414
ZXM_expi 176414
ZX_Z_sub 182036
ZC_mod2BIL_FqC 305402
ZX_val 336833
RgX_check_QX 369645
ZX_Z_eval 523322
ZX_neg 599559
ZX_affine 674950
ZX_divuexact 977795
ZXC_eval2BIL 1091375
ZXC_expi 1091375
Z_mod2BIL_Fq 1199133
ZX_mod_Xnm1 1735951
Kronecker_to_ZXX 1768191
QX_ZX_rem 1832855
ZXn_mul 2603305
ZX_equal 2609317
Z_ZX_sub 2721995
RgX_check_ZX 2974146
ZXX_mul_Kronecker 3028620
QX_mul 3607448
ZX_Z_translate_basecase 3887873
ZX_Z_translate 3981642
ZX_Z_divexact 5103031
ZX_copy 5479286
ZX_eval2BIL 5555182
ZX_expi 5555182
ZX_shifti 6573553
RgXX_to_Kronecker 6661367
ZX_deriv 7931111
RgXX_to_Kronecker_spec 9997088
ZX_rem 11144294
ZX_Z_mul 14415181
ZX_sqrspec_sqri 18104744
ZX_valrem 29379639
ZX_sub 29678794
ZX_mulspec_mulii 37639204
Z_ZX_mulshiftspec 38112383
ZX_add 38484845
Z_sqrshiftspec_ZX 43648349
Z_mod2BIL_ZX 56997515
ZX_sqrspec_basecase 76976883
ZX_mul 83050089
ZX_mulspec 91513626
ZX_eval2BILspec 94673044
ZX_sqrspec 139426927
ZX_sqr 139429888
ZX_expispec 171660481
ZXX_renormalize 312919012
ZX_valspec 315224702
ZX_sqrspec_basecase_limb 317169513

Generated by: LCOV version 1.16