// quantum computing emulation library, R. Perry, January 2022
// 
#ifndef _QCE_LIB_H_
#define _QCE_LIB_H_

namespace qce
{
// non-template functions, defined in lib.cc:
//
//   SRAND	set srand() using time(0) or SRAND environment variable
//   drand	0.0 <= drand() < 1.0
//   irand(n)	0 <= irand() < n
//   printb	print binary
//   bitrev	bit reverse, used by qfft()
//   error	print error message and exit
//   emalloc	malloc with exit on error
//
unsigned int SRAND();
double drand();
unsigned long irand( unsigned long n);
void printb( unsigned long x, unsigned int n);
unsigned long bitrev( unsigned long x, unsigned int nbits);
void error( const char *msg);
void *emalloc( unsigned long size);

} // namespace qce

#endif // _QCE_LIB_H_