SW006013 Microchip Technology, SW006013 Datasheet - Page 220

• 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 216
_Q15sin
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15sinPI
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15sinSeries
Description:
Include:
Prototype:
Argument:
Return Value:
This function finds the sine of a Q15 value.
<libq.h>
_Q15 _Q15sin(_Q15 x);
x
2
This function returns the sine of x in Q15 format. This value ranges
from -27573 to 27573.
This function finds the sine of PI (π) times a Q15 value.
<libq.h>
_Q15 _Q15sinPI(_Q15 x);
x
2
This function returns the sine of PI times x in Q15 format. This value
ranges from -32768 to 32767.
Generates the sine series with the given normalizing frequency f and
the given number of samples num starting from start. Stores the
result in buffer buf.
<libq.h>
short _Q15sinSeries(_Q15 f, short start, short num,
f
(2
16384. This argument represents the Normalizing frequency.
start a fixed point number in Q16 format, which ranges from 0 to
(2
This argument represents the Starting Sample number in the Sine
Series.
num a fixed point number in Q16 format, which ranges from 0 to
(2
This argument represents the Number of Sine Samples the function is
called to generate.
Note: num should not be more than 16383 for dsPIC and 32767 for PIC
devices.
buf a pointer to the buffer where the generated sine samples would
get copied into.
This function returns num, the number of generated sine samples.
15
15
_Q15 *buf);
31
31
31
-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
-1). The valid range of values for this argument is from -16384 to
-1). The valid range of values for this argument is from 1 to 32767.
-1). The valid range of values for this argument is from 1 to 32767.
a fixed point number in Q15 format, which ranges from 0 to
© 2008 Microchip Technology Inc.
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