SW006013 Microchip Technology, SW006013 Datasheet - Page 215

• 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.
_Q15atanByPI
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15atanYByX
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15atanYByXByPI
Description:
Include:
Prototype:
Argument:
Return Value:
_Q15atoi
Description:
Include:
Prototype:
Argument:
Return Value:
This function finds the arc tangent of a Q15 value and then divides by
PI (π).
<libq.h>
_Q15 _Q15atanByPI(_Q15 x);
x
2
This function returns the arc tangent of x, divided by PI, in Q15 format.
This value ranges from -8192 to 8192.
This function finds the arc tangent of a Q15 value divided by a second
Q15 value.
<libq.h>
_Q15 _Q15atanYByX(_Q15 x, _Q15 y);
x
2
y
2
This function returns the arc tangent of y divided by x in Q15 format.
This value ranges from -25736 to 25735.
This function finds the arc tangent of a Q15 value divided by a second
Q15 value and then divides the result by PI (π).
<libq.h>
_Q15 _Q15atanYByXByPI(_Q15 x, _Q15 y);
x
2
y
2
This function returns the arc tangent of y divided by x, divided by PI, in
Q15 format. This value ranges from -8192 to 8192.
This function takes a string which holds the ASCII representation of
decimal digits and converts it into a single Q15 number.
Note: The decimal digit should not be beyond the range -32768 to
32767.
<libq.h>
_Q15 _Q15atoi(const char *s);
s
This function returns the integer equivalent of s in Q15 format, which
range is from -32768 to 32767.
15
15
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 32767.
-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 -2
a fixed point number in Q15 format, which ranges from -2
a fixed point number in Q15 format, which ranges from -2
a buffer holding the ASCII values of each decimal digit.
DS51456E-page 211
15
15
15
15
15
to
to
to
to
to