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: 2026-03-24 09:26:44 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 5369
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 36285
ZXT_remi2n 44973
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 87121
ZX_Z_add_shallow 94984
QX_sqr 95818
ZX_remi2n 105322
ZX_max_lg 107853
ZX_mulu 121184
ZXM_eval2BIL 176414
ZXM_expi 176414
ZX_Z_sub 182037
ZC_mod2BIL_FqC 305402
ZX_val 336837
RgX_check_QX 369647
ZX_Z_eval 523324
ZX_neg 599569
ZX_affine 674950
ZX_divuexact 977795
ZXC_eval2BIL 1091375
ZXC_expi 1091375
Z_mod2BIL_Fq 1199133
ZX_mod_Xnm1 1735950
Kronecker_to_ZXX 1768219
QX_ZX_rem 1832855
ZXn_mul 2603305
ZX_equal 2609330
Z_ZX_sub 2721965
RgX_check_ZX 2974228
ZXX_mul_Kronecker 3028675
QX_mul 3607448
ZX_Z_translate_basecase 3887796
ZX_Z_translate 3981569
ZX_Z_divexact 5102851
ZX_copy 5479235
ZX_eval2BIL 5555182
ZX_expi 5555182
ZX_shifti 6571870
RgXX_to_Kronecker 6661482
ZX_deriv 7931230
RgXX_to_Kronecker_spec 9997618
ZX_rem 11144157
ZX_Z_mul 14415089
ZX_sqrspec_sqri 18104139
ZX_valrem 29380166
ZX_sub 29672460
ZX_mulspec_mulii 37638232
Z_ZX_mulshiftspec 38111611
ZX_add 38480514
Z_sqrshiftspec_ZX 43646796
Z_mod2BIL_ZX 56995751
ZX_sqrspec_basecase 76973424
ZX_mul 83048572
ZX_mulspec 91511830
ZX_eval2BILspec 94670371
ZX_sqrspec 139418325
ZX_sqr 139422591
ZX_expispec 171655621
ZXX_renormalize 312902082
ZX_valspec 315214840
ZX_sqrspec_basecase_limb 317198380

Generated by: LCOV version 1.16