1 files changed, 89 insertions, 0 deletions
diff --git a/gsl-1.9/specfunc/result.c b/gsl-1.9/specfunc/result.c
new file mode 100644
index 0000000..43ff3bb
--- /dev/null
+++ b/gsl-1.9/specfunc/result.c
@@ -0,0 +1,89 @@
+/* specfunc/result.c
+ * 
+ * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
+ * 
+ * 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.
+ */
+
+/* Author:  G. Jungman */
+
+#include <config.h>
+#include <gsl/gsl_math.h>
+#include <gsl/gsl_errno.h>
+#include <gsl/gsl_sf_exp.h>
+#include <gsl/gsl_sf_result.h>
+
+
+int
+gsl_sf_result_smash_e(const gsl_sf_result_e10 * re, gsl_sf_result * r)
+{
+  if(re->e10 == 0) {
+    /* nothing to smash */
+    r->val = re->val;
+    r->err = re->err;
+    return GSL_SUCCESS;
+  }
+  else {
+    const double av = fabs(re->val);
+    const double ae = fabs(re->err);
+
+    if(   GSL_SQRT_DBL_MIN < av && av < GSL_SQRT_DBL_MAX
+       && GSL_SQRT_DBL_MIN < ae && ae < GSL_SQRT_DBL_MAX
+       && 0.49*GSL_LOG_DBL_MIN  < re->e10 && re->e10 < 0.49*GSL_LOG_DBL_MAX
+       ) {
+      const double scale = exp(re->e10 * M_LN10);
+      r->val = re->val * scale;
+      r->err = re->err * scale;
+      return GSL_SUCCESS;
+    }
+    else {
+      return gsl_sf_exp_mult_err_e(re->e10*M_LN10, 0.0, re->val, re->err, r);
+    }
+  }
+/*
+  int stat_v;
+  int stat_e;
+
+  if(re->val == 0.0) {
+    r->val = 0.0;
+    stat_v = GSL_SUCCESS;
+  }
+  else {
+    gsl_sf_result r_val;
+    const double s = GSL_SIGN(re->val);
+    const double x_v = re->e10*M_LN10 + log(fabs(re->val));
+    stat_v = gsl_sf_exp_e(x_v, &r_val);
+    r->val = s * r_val.val;
+  }
+
+  if(re->err == 0.0) {
+    r->err = 0.0;
+    stat_e = GSL_SUCCESS;
+  }
+  else if(re->val != 0.0) {
+    r->err = fabs(r->val * re->err/re->val);
+    stat_e = GSL_SUCCESS;
+  }
+  else {
+    gsl_sf_result r_err;
+    const double x_e = re->e10*M_LN10 + log(fabs(re->err));
+    stat_e = gsl_sf_exp_e(x_e, &r_err);
+    r->err = r_err.val;
+  }
+
+  return GSL_ERROR_SELECT_2(stat_v, stat_e);
+*/
+}
+