| /* ieee-utils/print.c |
| * |
| * Copyright (C) 1996, 1997, 1998, 1999, 2000 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 2 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 <config.h> |
| #include <stdio.h> |
| #include <math.h> |
| #include <gsl/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); |
| } |
| |
| |
| |
| |
| |