CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
Function:
Availability:
Examples:
Example
Files:
Also See:
To poll the SDRDY bit and if set return the signed 32 bit value stored in the
SD1RESH and SD1RESL registers, and clear the SDRDY bit. The result
returned depends on settings made with the setup_sd_adc() function, but will
always be a signed int32 value with the most significant bits being meaningful.
Refer to Section 66, 16-bit Sigma-Delta A/D Converter, of the PIC24F Family
Reference Manual for more information on the module and the result format.
Only devices with a Sigma-Delta Analog to Digital Converter (SD ADC) module.
value = read_sd_adc()
None
setup_sd_adc(), set_sd_adc_calibration(), set_sd_adc_channel()
realloc( )
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
realloc (ptr, size)
ptr is a null pointer or a pointer previously returned by calloc or malloc or
realloc function, size is an integer representing the number of byes to be
allocated.
A pointer to the possibly moved allocated memory, if any. Returns null
otherwise.
The realloc function changes the size of the object pointed to by the ptr to the
size specified by the size. The contents of the object shall be unchanged up to
the lesser of new and old sizes. If the new size is larger, the value of the newly
allocated space is indeterminate. If ptr is a null pointer, the realloc function
behaves like malloc function for the specified size. If the ptr does not match a
pointer earlier returned by the calloc, malloc or realloc, or if the space has
been deallocated by a call to free or realloc function, the behavior is undefined.
If the space cannot be allocated, the object pointed to by ptr is unchanged. If
size is zero and the ptr is not a null pointer, the object is to be freed.
All devices
#INCLUDE
int * iptr;
iptr=malloc(10);
realloc(iptr,20)
// iptr will point to a block of memory of 20 bytes, if available.
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