musl-tcc/src/math/s390x/roundf.c

#include <math.h>

#if defined(__HTM__) || __ARCH__ >= 9

float roundf(float x)
{
	__asm__ ("fiebra %0, 1, %1, 4" : "=f"(x) : "f"(x));
	return x;
}

#else

#include "../roundf.c"

#endif