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 30851-7844d7b3a5) Lines: 726 806 90.1 %
Date: 2026-05-03 09:26:29 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 5047
ZXX_sqr_Kronecker 5306
ZXX_max_lg 5418
ZXQM_mul 6629
ZM_mod2BIL_ZXQM 6769
ZXV_Z_mul 7476
ZXX_Z_mul 8883
ZXQX_ZXQ_mul 8988
QXQX_mul 13377
ZC_mod2BIL_ZXQC 14896
zx_to_ZX 20923
ZXQX_mul 22365
scalar_ZX_shallow 23051
Kronecker_to_ZXQX 24269
ZXX_evalx0 28548
ZX_rescale 36284
ZXT_remi2n 45155
ZXX_Z_divexact 56469
scalar_ZX 56562
Z_mod2BIL_ZXQ 65338
FqM_mul_Kronecker 81851
ZM_mod2BIL_FqM 81851
ZXV_dotproduct 82943
ZX_Z_add 87218
ZX_Z_add_shallow 94990
ZX_remi2n 105561
ZX_max_lg 108119
QX_sqr 109275
ZX_mulu 121184
ZXM_eval2BIL 177100
ZXM_expi 177100
ZX_Z_sub 182115
ZC_mod2BIL_FqC 305402
ZX_val 336886
RgX_check_QX 369767
ZX_Z_eval 524345
ZX_neg 599534
ZX_affine 674992
ZX_divuexact 977795
ZXC_eval2BIL 1092747
ZXC_expi 1092747
Z_mod2BIL_Fq 1199133
ZX_mod_Xnm1 1735661
Kronecker_to_ZXX 1768141
QX_ZX_rem 1904535
ZX_equal 2580052
ZXn_mul 2603312
Z_ZX_sub 2730879
RgX_check_ZX 2976737
ZXX_mul_Kronecker 3028367
QX_mul 3805746
ZX_Z_translate_basecase 3888068
ZX_Z_translate 3981830
ZX_Z_divexact 5123188
ZX_eval2BIL 5557926
ZX_expi 5557926
ZX_copy 5845879
ZX_shifti 6522856
RgXX_to_Kronecker 6700905
ZX_deriv 7933428
RgXX_to_Kronecker_spec 10036311
ZX_rem 11518118
ZX_Z_mul 14448065
ZX_sqrspec_sqri 18022471
ZX_valrem 29389452
ZX_sub 29635070
ZX_mulspec_mulii 38090634
Z_ZX_mulshiftspec 38496558
ZX_add 38557429
Z_sqrshiftspec_ZX 43748774
Z_mod2BIL_ZX 57365207
ZX_sqrspec_basecase 76688336
ZX_mul 84688990
ZX_mulspec 93152097
ZX_eval2BILspec 95493661
ZX_sqrspec 139167155
ZX_sqr 139170555
ZX_expispec 172196084
ZX_sqrspec_basecase_limb 315910851
ZXX_renormalize 316431041
ZX_valspec 316956956

Generated by: LCOV version 1.16