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#ifdef COMPILER_GCC
typedef union DoubleFloatUnion {
double d;
long long int ll;
unsigned long long ull;
} DoubleFloatUnion;
/**
* Gets float32 from uint64_t.
*
* https://gcc.gnu.org/onlinedocs/gccint/the-gcc-low-level-runtime-library/routines-for-floating-point-emulation.html#c.__floatundisf
*/
float __floatundisf(unsigned long long i) {
register DoubleFloatUnion dull;
register float ret;
dull.ull = i;
__asm__("cvt.s.l %0, %1" : "=f"(ret) : "f"(dull.d));
if ((long) i < 0) {
// cvt.s.l assumes signed input, adjust output
ret += 4294967296.0f; // 2^32
}
return ret;
}
#endif
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