Supplementary source code for "Detectability of gravity change on the sea surface due to magma accumulation beneath submarine volcanoes"

Linux/C++ program to calculate the gravity change due to the deformation of infinite elastic cone. The gravity change is evaluated at fixed point outside the cone. This code is used in a scientific paper "Detectability of gravity change on the sea surface due to magma accumulation beneath submarine volcanoes" by R. Nishiyama (under review).