SW006013 Microchip Technology, SW006013 Datasheet - Page 154

• 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 150
asinf (Continued)
atan
Description:
Include:
Prototype:
Argument:
Return Value:
Remarks:
Example:
}
Output:
Error: domain error
The arcsine of 2.000000 is nan
The arcsine of 0.000000 is 0.000000
Calculates the trigonometric arc tangent function of a double precision
floating-point value.
<math.h>
double atan (double 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
errno = 0;
x = 2.0F;
y = asinf(x);
if (errno)
printf("The arcsine of %f is %f\n\n", x, y);
errno = 0;
x = 0.0F;
y = asinf(x);
if (errno)
printf("The arcsine of %f is %f\n\n", x, y);
double x, y;
x = 2.0;
y = atan (x);
printf("The arctangent of %f is %f\n\n", x, y);
x = -1.0;
y = atan (x);
printf("The arctangent of %f is %f\n\n", x, y);
perror("Error");
perror("Error");
value for which to return the arc tangent
/* for atan
© 2008 Microchip Technology Inc.
*/