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 30660-09c6d0ed2e) Lines: 710 789 90.0 %
Date: 2026-02-01 09:23:44 Functions: 94 105 89.5 %
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 1768444
QXQM_mul 4795
QXQM_sqr 7
QXQX_QXQ_mul 3465
QXQX_mul 13377
QXQX_powers 476
QXQX_sqr 1904
QX_ZX_rem 1833342
QX_mul 3539122
QX_sqr 95899
RgXX_to_Kronecker 6676847
RgXX_to_Kronecker_spec 10013566
RgX_check_QX 369634
RgX_check_ZX 2971583
RgX_check_ZXX 1022
Xpm1_powu 434
ZC_mod2BIL_FqC 305402
ZC_mod2BIL_ZXQC 14210
ZM_mod2BIL_FqM 81851
ZM_mod2BIL_ZXQM 6426
ZXC_eval2BIL 1091375
ZXC_expi 1091375
ZXM_eval2BIL 176414
ZXM_expi 176414
ZXQM_mul 6286
ZXQM_sqr 140
ZXQX_ZXQ_mul 8988
ZXQX_mul 22365
ZXQX_sqr 1904
ZXT_remi2n 45299
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 5389
ZXX_mul_Kronecker 3028675
ZXX_renormalize 311309691
ZXX_sqr_Kronecker 5306
ZX_Z_add 87292
ZX_Z_add_shallow 94998
ZX_Z_divexact 5100897
ZX_Z_eval 523324
ZX_Z_mul 14389382
ZX_Z_sub 182029
ZX_Z_translate 3973731
ZX_Z_translate_basecase 3879960
ZX_add 38425533
ZX_affine 667852
ZX_copy 5532834
ZX_deriv 7928071
ZX_digits 0
ZX_div_by_X_1 21
ZX_divuexact 977795
ZX_equal 2067066
ZX_eval1 4718
ZX_eval2BIL 5555182
ZX_eval2BILspec 94521096
ZX_expi 5555182
ZX_expispec 170808679
ZX_max_lg 107885
ZX_mod_Xnm1 1735755
ZX_mul 112476131
ZX_mulspec 120939310
ZX_mulspec_mulii 37578633
ZX_mulu 121184
ZX_neg 599176
ZX_rem 11194747
ZX_remi2n 105753
ZX_rescale 36273
ZX_rescale2n 0
ZX_rescale_lt 0
ZX_shifti 6552259
ZX_sqr 138609913
ZX_sqrspec 138610727
ZX_sqrspec_basecase 76277250
ZX_sqrspec_basecase_limb 315058962
ZX_sqrspec_sqri 18072106
ZX_sub 29607916
ZX_val 331503
ZX_valrem 31510122
ZX_valspec 330895616
ZXn_mul 2603326
ZXn_sqr 1575
Z_XpN_powu 0
Z_ZX_mulshiftspec 47664407
Z_ZX_sub 2720781
Z_mod2BIL_Fq 1199133
Z_mod2BIL_ZX 56905448
Z_mod2BIL_ZXQ 63966
Z_sqrshiftspec_ZX 43556259
_ZX_add 0
_ZX_divrem 0
_ZX_mul 0
_ZX_sqr 0
scalar_ZX 56471
scalar_ZX_shallow 23051
zx_to_ZX 1344
zx_z_divexact 112

Generated by: LCOV version 1.16