/usr/share/yacas/specfunc.rep/ is in yacas 1.3.3-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/yacas/specfunc.rep/bernou.ys
/usr/share/yacas/specfunc.rep/bernou.ys.def
/usr/share/yacas/specfunc.rep/bessel.ys
/usr/share/yacas/specfunc.rep/bessel.ys.def
/usr/share/yacas/specfunc.rep/code.ys
/usr/share/yacas/specfunc.rep/code.ys.def
/usr/share/yacas/specfunc.rep/gamma.ys
/usr/share/yacas/specfunc.rep/gamma.ys.def
/usr/share/yacas/specfunc.rep/gammaconst.ys
/usr/share/yacas/specfunc.rep/gammaconst.ys.def
/usr/share/yacas/specfunc.rep/om.ys
/usr/share/yacas/specfunc.rep/zeta.ys
/usr/share/yacas/specfunc.rep/zeta.ys.def