xref: /llvm-project/libc/cmake/modules/compiler_features/check_float16_conversion.cpp (revision 127349fcba81646389e4b8202b35405a5fdbef47)
1 #include "include/llvm-libc-macros/float16-macros.h"
2 #include "include/llvm-libc-types/float128.h"
3 
4 #ifndef LIBC_TYPES_HAS_FLOAT16
5 #error unsupported
6 #endif
7 
8 _Float16 cvt_from_float(float x) { return static_cast<_Float16>(x); }
9 
10 _Float16 cvt_from_double(double x) { return static_cast<_Float16>(x); }
11 
12 _Float16 cvt_from_long_double(long double x) {
13   return static_cast<_Float16>(x);
14 }
15 
16 #ifdef LIBC_TYPES_HAS_FLOAT128
17 _Float16 cvt_from_float128(float128 x) { return static_cast<_Float16>(x); }
18 #endif
19 
20 float cvt_to_float(_Float16 x) { return x; }
21 
22 double cvt_to_double(_Float16 x) { return x; }
23 
24 long double cvt_to_long_double(_Float16 x) { return x; }
25 
26 #ifdef LIBC_TYPES_HAS_FLOAT128
27 float128 cvt_to_float128(_Float16 x) { return x; }
28 #endif
29 
30 extern "C" void _start() {}
31