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+---- Thread: Initialisation of arrays of floats (/showthread.php?tid=1357)
Initialisation of arrays of floats - sdcandy - 19-07-2017
Rule 9.3 in MISRA C:2012 has an exception which states "An initializer of the form { 0 } may be used to explicitly initialize all elements of an array object or subobject". This means that something of the form is acceptable:
Code:
uint32_t x[3] = { 0 };When using floating point types is it also acceptable to use something of the form:
Code:
typedef double float64_t;
float64_t array_a[10] = { 0.0 };-Andy.
Re: Initialisation of arrays of floats - misra-c - 28-09-2017
{ 0 } is a MISRA-C 2012 exception, which permits the initialization of the elements of any array to zero.
Initialisating an array of double with { 0.0 } is non-compliant, unless the array has only one element.
Code:
float64_t array_a[10] = { 0.0 }; // non-compliant
float64_t array_a[10] = { 0 }; // compliant
float64_t array_a[10] = { 0.0, 0.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 0.0, 0.0}; // compliant