[Fortran] Replace archaic intrinsic functions

Over time, several intrinsic functions have been labeled archaic. See [here](https://gcc.gnu.org/onlinedocs/gcc-3.0.4/g77/Table-of-Intrinsic-Functions.html#Table%20of%20Intrinsic%20Functions) for the complete list. They should be replaced by their modern equivalent. For example: `dsin` works for real, while `csin` and `zsin` for complex of different kind. They should be replaced by `sin`, which works for all cases.