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Add support for struct in M_AS_TYPE

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Patrick Pelissier committed 2021-01-07 22:13:10 +01:00
1 parent 06b79a6caa
commit 9aa08bfc59
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m-core.h
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@@ -1952,11 +1952,12 @@ M_PARSE_DEFAULT_TYPE_DEF(m_core_parse_ldouble, long double, strtold, )
This macro overcomes this limitation by returning : This macro overcomes this limitation by returning :
* either the input 'x' if it is of type 'type', * either the input 'x' if it is of type 'type',
* or the value 0 view as a type 'type'. * or the value 0 view as a type 'type'.
Only works with pointers, integer or floats. Only works with pointers, integer, floats or structures.
Using (x)+0 will perform integer promotions, and prevent the macro NOTE: Using (x)+0 will perform integer promotions, and prevent the macro
to be used for small types (bool, char, short). to be used for small types (bool, char, short).
NOTE: Not compatible with C++.
*/ */
#define M_AS_TYPE(type, x) _Generic(((void)0,(x)), type: (x), default: (type) 0) #define M_AS_TYPE(type, x) _Generic(((void)0,(x)), type: (x), default: (type) {0})
/* Perform a C conditional operator with the following restriction: /* Perform a C conditional operator with the following restriction:
* - cond shall be a compile time constant. * - cond shall be a compile time constant.