SW006014 Microchip Technology, SW006014 Datasheet - Page 155

• Manufacturer Part Number: SW006014
• Description: C COMPILER MPLAB FOR PIC24 MCU
• Manufacturer: Microchip Technology
• Type: MPLAB® C Compilerr
• Series: PIC24r

Specifications of SW006014

• Supported Families: PIC24
• Core Architecture: PIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC24
• Tool Function: Compiler
• Tool Type: Compiler
• Processor Series: PIC24
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: PIC24
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2008 Microchip Technology Inc.
atanf
Description:
Include:
Prototype:
Argument:
Return Value:
Remarks:
Example:
atan2
Description:
Include:
Prototype:
Arguments:
Return Value:
Remarks:
Example:
Calculates the trigonometric arc tangent function of a single precision
floating-point value.
<math.h>
float atanf (float x);
x
Returns the arc tangent in radians in the range of -pi/2 to +pi/2
(inclusive).
No domain or range error will occur.
#include <math.h>
#include <stdio.h> /* for printf */
int main(void)
{
}
Output:
The arctangent of 2.000000 is 1.107149
The arctangent of -1.000000 is -0.785398
Calculates the trigonometric arc tangent function of y/x.
<math.h>
double atan2 (double y, double x);
y
x
Returns the arc tangent in radians in the range of -pi to pi (inclusive)
with the quadrant determined by the signs of both parameters.
A domain error occurs if both x and y are zero or both x and y are
+/- infinity.
#include <math.h>
#include <stdio.h> /* for printf, perror */
#include <errno.h> /* for errno
int main(void)
{
float x, y;
x = 2.0F;
y = atanf (x);
printf("The arctangent of %f is %f\n\n", x, y);
x = -1.0F;
y = atanf (x);
printf("The arctangent of %f is %f\n\n", x, y);
double x, y, z;
value for which to return the arc tangent
y value for which to return the arc tangent
x value for which to return the arc tangent
/* for atanf
/* for atan2
*/
DS51456E-page 151
*/
*/