I haveupgraded a powerstationfortran project into an intel fortran project. Same routines, same code. Nothing but the compiler changes. Nevertheless, comparing the results of the two projects I have pumped into some differencies in the evaluation of trigonometric functions from the two compilers. The following code produces continuous values of the ACOS function when using powerstation whereas when using intel, it produces discrete evaluations:
Can somebody tell me why this happens? How can I overcome thisissue? Is there a way to increase the accuracy of evaluation of trigonometric functions using intel compiler? It is seems as the compiler makes some roundings to the evaluated values and hence the discrete output.