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- /* ieee-utils/print.c
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000, 2007 Brian Gough
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- #include "gsl__config.h"
- #include <stdio.h>
- #include <math.h>
- #include "gsl_ieee_utils.h"
- /* A table of sign characters, 0=positive, 1=negative. We print a space
- instead of a unary + sign for compatibility with bc */
- static char signs[2]={' ','-'} ;
- void
- gsl_ieee_fprintf_float (FILE * stream, const float * x) {
- gsl_ieee_float_rep r ;
- gsl_ieee_float_to_rep(x, &r) ;
- switch (r.type)
- {
- case GSL_IEEE_TYPE_NAN:
- fprintf(stream, "NaN") ;
- break ;
- case GSL_IEEE_TYPE_INF:
- fprintf(stream, "%cInf", signs[r.sign]) ;
- break ;
- case GSL_IEEE_TYPE_NORMAL:
- fprintf(stream, "%c1.%s*2^%d", signs[r.sign], r.mantissa, r.exponent) ;
- break ;
- case GSL_IEEE_TYPE_DENORMAL:
- fprintf(stream, "%c0.%s*2^%d", signs[r.sign], r.mantissa, r.exponent + 1) ;
- break ;
- case GSL_IEEE_TYPE_ZERO:
- fprintf(stream, "%c0", signs[r.sign]) ;
- break ;
- default:
- fprintf(stream, "[non-standard IEEE float]") ;
- }
- }
- void
- gsl_ieee_printf_float (const float * x)
- {
- gsl_ieee_fprintf_float (stdout,x);
- }
- void
- gsl_ieee_fprintf_double (FILE * stream, const double * x) {
- gsl_ieee_double_rep r ;
- gsl_ieee_double_to_rep (x, &r) ;
- switch (r.type)
- {
- case GSL_IEEE_TYPE_NAN:
- fprintf(stream, "NaN") ;
- break ;
- case GSL_IEEE_TYPE_INF:
- fprintf(stream, "%cInf", signs[r.sign]) ;
- break ;
- case GSL_IEEE_TYPE_NORMAL:
- fprintf(stream, "%c1.%s*2^%d", signs[r.sign], r.mantissa, r.exponent) ;
- break ;
- case GSL_IEEE_TYPE_DENORMAL:
- fprintf(stream, "%c0.%s*2^%d", signs[r.sign], r.mantissa, r.exponent + 1) ;
- break ;
- case GSL_IEEE_TYPE_ZERO:
- fprintf(stream, "%c0", signs[r.sign]) ;
- break ;
- default:
- fprintf(stream, "[non-standard IEEE double]") ;
- }
- }
- void
- gsl_ieee_printf_double (const double * x)
- {
- gsl_ieee_fprintf_double (stdout,x);
- }
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