mailing list of musl libc

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
 #include <math.h>

#if __riscv_flen >= 64

double round(double x)
{
	if (!isfinite(x)) return x;
	double tmp;
	long long n;
	__asm__ ("fcvt.l.d %0, %1, rmm" : "=r"(n) : "f"(x));
	__asm__ ("fcvt.d.l %0, %1" : "=f"(tmp) : "r"(n));
	__asm__ ("fsgnj.d %0, %1, %2" : "=f"(x) : "f"(tmp), "f"(x));
	return x;
}

#else

#include "../round.c"

#endif