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 30733-eb2d773d38) Lines: 711 789 90.1 %
Date: 2026-03-03 09:24:12 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 81641
Kronecker_to_ZXQX 24269
Kronecker_to_ZXX 1767151
QXQM_mul 4795
QXQM_sqr 7
QXQX_QXQ_mul 3318
QXQX_mul 13377
QXQX_powers 476
QXQX_sqr 1904
QX_ZX_rem 1832834
QX_mul 3422098
QX_sqr 95864
RgXX_to_Kronecker 6663701
RgXX_to_Kronecker_spec 9978356
RgX_check_QX 369647
RgX_check_ZX 2974350
RgX_check_ZXX 1022
Xpm1_powu 434
ZC_mod2BIL_FqC 304982
ZC_mod2BIL_ZXQC 14210
ZM_mod2BIL_FqM 81641
ZM_mod2BIL_ZXQM 6426
ZXC_eval2BIL 1090535
ZXC_expi 1090535
ZXM_eval2BIL 175994
ZXM_expi 175994
ZXQM_mul 6286
ZXQM_sqr 140
ZXQX_ZXQ_mul 8988
ZXQX_mul 22365
ZXQX_sqr 1904
ZXT_remi2n 45300
ZXV_ZX_fromdigits 0
ZXV_Z_mul 7476
ZXV_dotproduct 82453
ZXV_equal 28
ZXV_remi2n 0
ZXX_Z_add_shallow 0
ZXX_Z_divexact 52885
ZXX_Z_mul 8883
ZXX_evalx0 28408
ZXX_max_lg 5390
ZXX_mul_Kronecker 3028486
ZXX_renormalize 312083177
ZXX_sqr_Kronecker 5306
ZX_Z_add 87221
ZX_Z_add_shallow 95002
ZX_Z_divexact 5055057
ZX_Z_eval 523324
ZX_Z_mul 14223033
ZX_Z_sub 181831
ZX_Z_translate 3974561
ZX_Z_translate_basecase 3880787
ZX_add 38403748
ZX_affine 668272
ZX_copy 5480547
ZX_deriv 7928682
ZX_digits 0
ZX_div_by_X_1 21
ZX_divuexact 977795
ZX_equal 2609393
ZX_eval1 4718
ZX_eval2BIL 5553502
ZX_eval2BILspec 94537428
ZX_expi 5553502
ZX_expispec 171391082
ZX_max_lg 107889
ZX_mod_Xnm1 1735976
ZX_mul 113174675
ZX_mulspec 121636641
ZX_mulspec_mulii 37585562
ZX_mulu 120414
ZX_neg 599207
ZX_rem 11146406
ZX_remi2n 105757
ZX_rescale 36282
ZX_rescale2n 0
ZX_rescale_lt 0
ZX_shifti 6551075
ZX_sqr 139180250
ZX_sqrspec 139170619
ZX_sqrspec_basecase 76841839
ZX_sqrspec_basecase_limb 316692559
ZX_sqrspec_sqri 18078062
ZX_sub 29599379
ZX_val 331739
ZX_valrem 29380508
ZX_valspec 330631677
ZXn_mul 2603305
ZXn_sqr 1575
Z_XpN_powu 0
Z_ZX_mulshiftspec 46133282
Z_ZX_sub 2721970
Z_mod2BIL_Fq 1198293
Z_mod2BIL_ZX 56916385
Z_mod2BIL_ZXQ 63966
Z_sqrshiftspec_ZX 43566819
_ZX_add 0
_ZX_divrem 0
_ZX_mul 0
_ZX_sqr 0
scalar_ZX 56562
scalar_ZX_shallow 23051
zx_to_ZX 1344
zx_z_divexact 112

Generated by: LCOV version 1.16