SW006013 Microchip Technology, SW006013 Datasheet - Page 216

• 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 212
_Q15cos
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15cosPI
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15exp
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15ftoi
Description:
Include:
Prototype:
Argument:
Return Value:
This function finds the cosine of a Q15 value.
<libq.h>
_Q15 _Q15cos(_Q15 x);
x
2
This function returns the cosine of x in Q15 format. This value ranges
from 17705 to 32767.
This function finds the cosine of PI (π) times a Q15 value.
<libq.h>
_Q15 _Q15cosPI(_Q15 x);
x
2
This function returns the cosine of PI times x in Q15 format. This value
ranges from -32768 to 32767.
This function finds the exponential value of a Q15 value.
<libq.h>
_Q15 _Q15exp(_Q15 x);
x
2
This function returns the exponent value of x in Q15 format. This value
ranges from 12055 to 32767.
This function converts a single-precision floating point value into its
corresponding Q15 value.
<libq.h>
_Q15 _Q15ftoi(float x);
x
range is -1 to 0.99996.
This function returns a fixed point number in Q15 format. This value
ranges from -32768 to 32767.
15
15
15
-1. The value of this argument ranges from -32768 to 32767.
-1. The value of this argument ranges from -32768 to 32767.
-1. The value of this argument ranges from -32768 to 0.
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 -2
a floating point equivalent number. The corresponding floating point
© 2008 Microchip Technology Inc.
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