1 /* $OpenBSD: difftime.c,v 1.12 2015/02/10 01:24:28 tedu Exp $ */ 2 /* This file is placed in the public domain by Matthew Dempsky. */ 3 4 #include "private.h" 5 6 #define HI(t) ((double)(t & 0xffffffff00000000LL)) 7 #define LO(t) ((double)(t & 0x00000000ffffffffLL)) 8 9 double 10 difftime(time_t t1, time_t t0) 11 { 12 return (HI(t1) - HI(t0)) + (LO(t1) - LO(t0)); 13 } 14