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#include <stdio.h>
// ip = rdi
// fp = rsi
// dp = rdx
// l = rcx
// fcvt:
// movl (%rdi), %eax eax<-int value of ip to eax
// vmovss (%rsi), %xmm0 xmm0<- move int value to float (vmov signed single?)
// vcvttsd2si (%rdx), %r8d r8d<- double value to signed integer?
// movl %r8d, (%rdi) *ip<- set pointer to truncated value of rdx
// vcvttsd2ss %eax, %xmm1, %xmm1 xmm1<- convert int to float
// vmovss %xmm1, (%rsi) fp<-*ip
// vcvtsi2sdq %rcx, %xmm1, %xmm1 xmm1<- convert long to double
// vmovsd %xmm1, (%rdx) dp<- l
// vunpcklps %xmm0, %xmm0, %xmm0
// vcvtps2pd %xmm0, %xmm0
// ret
double fcvt2(int *ip, float *fp, double *dp, long l)
{
int i = *ip; float f = *fp; double d = *dp;
*ip = (int) d;
*fp = (float) i;
*dp = (double) l;
return (double) f;
}
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