CCS C Compiler Manual PCB / PCM / PCH

Returns:
Function:
A float
Computes the natural logarithm of the float x. If the argument is less than or
equal to zero or too large, the behavior is undefined.
Note on error handling:
"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:
log: when the argument is negative
Availability:
Requires:
Examples:
Example Files:
Also See:
All devices
#INCLUDE
lnx = log(x);
None
log10(), exp(), pow()
log10( )
Syntax:
Parameters:
Returns:
Function:
result = log10 (value)
value is a float
A float
Computes the base-ten logarithm of the float x. If the argument is less than or
equal to zero or too large, the behavior is undefined.
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:
log10: when the argument is negative
Availability:
All devices
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