main.c

来自「用于TM1300/PNX1300系列DSP（主要用于视频处理）的各种滤波器源码」· C语言 代码 · 共 60 行

#include "tc.h"
main()
{
	init();
	reset();
	yyparse();
}

init()
{
  static STATEINFO init_state;

	state = &init_state;
}

reset()
{
  state->scale = 0;
  state->width = 8;
  state->randx = 1;
  state->verbose = 0;
  state->nblocks = 100;
  state->clip = 255;
}


yywrap()
{
  return 1;
}

yyerror(char *s)
{
  printf("%s", s);
}

tcsirint(d)
double d;
{
	int 	i;
	int	s;
	union { float f; int i; } u;

	u.f = d;
	if ((u.i&0x7F800000) == 0x7F800000 && (u.i&0x7FFFF)!=0)
		return 0;

	_asm {
		fld	d
		fistp	i
		fstsw   s
	}
	if (s & 1) {			/* I exception => overflow */
	  return d > 0.0 ? 0x7fffffff : 0x80000000;
	}
	return i;
}