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Built-in Functions
Result is a float
Function:
These functions perform basic Trigonometric functions.
sin
cos
tan
returns the sine value of the parameter (measured in radians)
returns the cosine value of the parameter (measured in radians)
returns the tangent value of the parameter (measured in radians)
asin returns the arc sine value in the range [-pi/2,+pi/2] radians
acos returns the arc cosine value in the range[0,pi] radians
atan returns the arc tangent value in the range [-pi/2,+pi/2] radians
atan2 returns the arc tangent of y/x in the range [-pi,+pi] radians
sinh returns the hyperbolic sine of x
cosh returns the hyperbolic cosine of x
tanh returns the hyperbolic tangent of x
Note on error handling:
If "errno.h" is included then the domain and range errors are stored in the errno
variable. The user can check the errno to see if an error has occurred and print
the error using the perror function.
Domain error occurs in the following cases:
asin: when the argument not in the range[-1,+1]
acos: when the argument not in the range[-1,+1]
atan2: when both arguments are zero
Range error occur in the following cases:
cosh: when the argument is too large
sinh: when the argument is too large
Availability: All devices
Requires:
Examples:
Example
Files:
Also See:
#INCLUDE <math.h>
float phase;
// Output one sine wave
for(phase=0; phase<2*3.141596; phase+=0.01)
set_analog_voltage( sin(phase)+1 );
ex_tank.c
log(), log10(), exp(), pow(), sqrt()
adc_done( )
Syntax:
value = adc_done();
Parameters: None
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