SW006013 Microchip Technology, SW006013 Datasheet - Page 218

• 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

DS51456E-page 214
_Q15neg
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15norm
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15power
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15random
Description:
Include:
Prototype:
Argument:
Return Value:
This function negates a Q15 value with saturation. The value is
saturated in the case where the input is -32768.
<libq.h>
_Q15 _Q15neg(_Q15 x);
x
2
This function returns -x in Q15 format. This value ranges from -32768
to 32767.
This function finds the normalized value of a Q15 value.
<libq.h>
_Q15 _Q15norm(_Q15 x);
x
2
This function returns the square root of x in Q15 format. This value
ranges from 16384 to -32767 for a positive number and -32768 to
-16384 for a negative number.
This function finds the power result, given the base value and the
power value in Q15 format.
<libq.h>
_Q15 _Q15power(_Q15 x, _Q15 y);
x
The value of this argument ranges from 1 to 32767.
y
The value of this argument ranges from 1 to 32767.
This function returns x to the power of y in Q15 format. This value
ranges from 1 to 32767.
This function generates a random number in the range from -32768 to
32767. The random number generation is periodic with period 65536.
This function uses the _Q15randomSeed variable as a random seed
value.
<libq.h>
_Q15 _Q15random(void);
None.
This function returns a random number in Q15 format. This value
ranges from -32768 to 32767.
15
15
-1. The value of this argument ranges from -32768 to 32767.
-1. The value of this argument ranges from -32768 to 32767.
a fixed point number in Q15 format, which ranges from -2
a fixed point number in Q15 format, which ranges from -2
a fixed point number in Q15 format, which ranges from 1 to 2
a fixed point number in Q15 format, which ranges from 1 to 2
© 2008 Microchip Technology Inc.
15
15
to
to
15
15
-1.
-1.