SW006013 Microchip Technology, SW006013 Datasheet - Page 225

• Manufacturer Part Number: SW006013
• Description: MPLAB C Compiler For DsPIC DSCs
• Manufacturer: Microchip Technology
• Series: DsPIC30F/33Fr
• Type: MPLAB® C Compilerr

Specifications of SW006013

• Supported Families: DsPIC30F, DsPIC33F
• Core Architecture: DsPIC
• Kit Contents: Software And Docs
• Mcu Supported Families: DsPIC30F And DsPIC33F
• Tool Function: Compiler
• Tool Type: Compiler
• Processor Series: dsPIC
• Lead Free Status / RoHS Status: na
• For Use With/related Products: dSPIC DSCs
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2008 Microchip Technology Inc.
_Q16mac
Description:
Include:
Prototype:
Argument:
Return Value:
_Q16macNoSat
Description:
Include:
Prototype:
Argument:
Return Value:
_Q16neg
Description:
Include:
Prototype:
Argument:
Return Value:
This function multiplies the two 32-bit inputs, x and y, and accumulates
the product with prod. The function takes care of saturating the result
in case of underflow or overflow.
<libq.h>
_Q16 _Q16mac(_Q16x, _Q16 y, _Q16 prod);
x
ranges from -2147483648 to 2147483647.
y
ranges from -2147483648 to 2147483647.
prod
ranges from -2147483648 to 2147483647.
This function returns the multiplied and accumulated value prod in
Q16 format. This value ranges from 0 to 2147483647.
This function multiplies the two 32 bit inputs, x and y and accumulates
the product with prod.This function only sets the _Q16macSatFlag
variable in case of an overflow or underflow and does not take care of
saturation.
<libq.h>
_Q16 _Q16macNoSat(_Q16 x, _Q16 y, _Q16 prod);
x
ranges from -2147483648 to 2147483647.
y
ranges from -2147483648 to 2147483647.
prod
ranges from -2147483648 to 2147483647.
This function returns the multiplied and accumulated value prod in
Q16 format. This value ranges from 0 to 2147483647.
This function negates x with saturation. The value is saturated in the
case where the input is -2147483648.
<libq.h>
_Q16 _Q16neg(_Q16 x);
x
ranges from -2147483648 to 2147483647.
This function returns the negated value of x in Q16 format. This value
ranges from -2147483648 to 2147483647.
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
a fixed point number in Q16 format. The value of this argument
DS51456E-page 221