Converts a linear range of values to an exponential range of values.
| in | 
 The input signal to convert.  | 
| srclo | 
 Lower limit of input range.  | 
| srchi | 
 Upper limit of input range.  | 
| dstlo | 
 Lower limit of output range.  | 
| dsthi | 
 Upper limit of output range.  | 
The dstlo and dsthi arguments must be nonzero and have the same sign.
linexp and exprange can be used to create a LinExp implicitly from a ugen, mapping its output values from linear range to an exponential one. The rate is derived from the ugen.