#ifndef _FVI_A_H
#define _FVI_A_H

#ifndef NO_ASM
#ifdef __WATCOMC__
int oflow_check(fix a,fix b);

#pragma aux oflow_check parm [eax] [ebx] value [eax] modify exact [eax ebx edx] = \
   "cdq"                \
    "xor eax,edx"   \
    "sub eax,edx"   \
    "xchg eax,ebx"  \
   "cdq"                \
    "xor eax,edx"   \
    "sub eax,edx"   \
    "imul ebx"      \
    "sar  edx,15"   \
    "or   dx,dx"    \
    "setnz al"      \
    "movzx eax,al";
#else
#ifdef __GNUC__
static inline int oflow_check(fix a,fix b) {
  register int __ret;
  int dummy;
  __asm__ (
    " cdq;"
    " xorl  %%edx,%%eax;"
    " subl  %%edx,%%eax;"
    " xchgl %%ebx,%%eax;"
    " cdq;"
    " xorl  %%edx,%%eax;"
    " subl  %%edx,%%eax;"
    " imull  %%ebx;"
    " sarl  $15,%%edx;"
    " orw   %%dx,%%dx;"
    " setnz %%al;"
    " movzbl %%al,%%eax"
     : "=a" (__ret), "=b" (dummy) : "a" (a), "1" (b) : "%edx");
    return __ret;
}
#else
static int oflow_check(fix a,fix b) {
	return 0; /* hoping the floating point fix-math is used */
}
/*#error unknown compiler*/
#endif
#endif

#else
static int oflow_check(fix a,fix b) {
	return 0; /* hoping the floating point fix-math is used */
}
#endif

#endif