根据国际水和水蒸气性质学会1997年9月于德国埃尔兰根IAPWS1997年关于工业用水和水蒸气热力学性质计算公式的公布，编写的Fortran程序，可以改写为C程序，或者参照文件内的C源码。(According to the publication of IAPWS 1997 in Erlangen, Germany, by the international society of water and steam properties on the calculation formula of thermodynamic properties of industrial water and steam, FORTRAN program can be rewritten as C program, or refer to the C source code in the document.)