typedef struct _ModuleSawtoothFract32
{
    ModuleInstanceDescriptor instance;            // Common Audio Weaver module instance structure
    FLOAT32 freq;                                 // Frequency of the sawtooth generator.
    fract32 phase;                                // The stored phase of the sawtooth module.
    fract32 phaseIncrement;                       // The amount that the oscillator phase is incremented for each output sample.
} ModuleSawtoothFract32Class;

 M=sawtooth_fract32_module(NAME, SR, BLOCKSIZE)
 Creates a sawtooth generator for use in the Audio Weaver.
 This module has a single 1 channel output pin with controllable 
 frequency. The output of the module changes instantly when the 
 frequency is updated.  Arguments:
    NAME - name of the module.
    SR - sample rate
    BLOCKSIZE - number of samples per output channel.