The problem is this
The routines take advantage of the AMD64 architecture for performance, and so are currently only available with 64-bit versions of ACML
I'm compiling for x86
It's true that the fastexp and other fast functions are only available with 64-bit versions of ACML. But people wanting to call them should also be aware that these functions are not part of ACML itself, but are part of the ACML vector math library ACML_MV which can be found in the same directory as ACML.