XEmacs 21.2.33 "Melpomene".

[chise/xemacs-chise.git.1] / src / floatfns.c

diff --git a/src/floatfns.c b/src/floatfns.c
index 5e86a98..337c581 100644 (file)
--- a/src/floatfns.c
+++ b/src/floatfns.c
@@ -55,9 +55,13 @@ Boston, MA 02111-1307, USA.  */
 #define THIS_FILENAME floatfns
 #include "sysfloat.h"
 
-#ifndef HAVE_RINT
+/* The code uses emacs_rint, so that it works to undefine HAVE_RINT
+   if `rint' exists but does not work right.  */
+#ifdef HAVE_RINT
+#define emacs_rint rint
+#else
 static double
-rint (double x)
+emacs_rint (double x)
 {
   double r = floor (x + 0.5);
   double diff = fabs (r - x);
@@ -75,7 +79,7 @@ static int in_float;
 /* If an argument is out of range for a mathematical function,
    here is the actual argument value to use in the error message.  */
 static Lisp_Object float_error_arg, float_error_arg2;
-static CONST char *float_error_fn_name;
+static const char *float_error_fn_name;
 
 /* Evaluate the floating point expression D, recording NUM
    as the original argument for error messages.
@@ -122,7 +126,7 @@ static CONST char *float_error_fn_name;
 /* Convert float to Lisp Integer if it fits, else signal a range
    error using the given arguments.  */
 static Lisp_Object
-float_to_int (double x, CONST char *name, Lisp_Object num, Lisp_Object num2)
+float_to_int (double x, const char *name, Lisp_Object num, Lisp_Object num2)
 {
   if (x >= ((EMACS_INT) 1 << (VALBITS-1))
       || x <= - ((EMACS_INT) 1 << (VALBITS-1)) - (EMACS_INT) 1)
@@ -186,7 +190,7 @@ static const struct lrecord_description float_description[] = {
 DEFINE_BASIC_LRECORD_IMPLEMENTATION ("float", float,
                                     mark_float, print_float, 0, float_equal,
                                     float_hash, float_description,
-                                    struct Lisp_Float);
+                                    Lisp_Float);
 \f
 /* Extract a Lisp number as a `double', or signal an error.  */
 
@@ -701,19 +705,19 @@ This is the same as the exponent of a float.
   double f = extract_float (arg);
 
   if (f == 0.0)
-    return make_int (- (int)((((EMACS_UINT) 1) << (VALBITS - 1)))); /* most-negative-fixnum */
+    return make_int (- (EMACS_INT)(((EMACS_UINT) 1) << (VALBITS - 1))); /* most-negative-fixnum */
 #ifdef HAVE_LOGB
   {
     Lisp_Object val;
-    IN_FLOAT (val = make_int ((int) logb (f)), "logb", arg);
-    return (val);
+    IN_FLOAT (val = make_int ((EMACS_INT) logb (f)), "logb", arg);
+    return val;
   }
 #else
 #ifdef HAVE_FREXP
   {
     int exqp;
     IN_FLOAT (frexp (f, &exqp), "logb", arg);
-    return (make_int (exqp - 1));
+    return make_int (exqp - 1);
   }
 #else
   {
@@ -737,7 +741,7 @@ This is the same as the exponent of a float.
         f /= d;
         val += i;
       }
-    return (make_int (val));
+    return make_int (val);
   }
 #endif /* ! HAVE_FREXP */
 #endif /* ! HAVE_LOGB */
@@ -831,7 +835,7 @@ Return the nearest integer to ARG.
     {
       double d;
       /* Screw the prevailing rounding mode.  */
-      IN_FLOAT ((d = rint (XFLOAT_DATA (arg))), "round", arg);
+      IN_FLOAT ((d = emacs_rint (XFLOAT_DATA (arg))), "round", arg);
       return (float_to_int (d, "round", arg, Qunbound));
     }
 #endif /* LISP_FLOAT_TYPE */
@@ -891,7 +895,7 @@ Return the nearest integer to ARG, as a float.
        (arg))
 {
   double d = extract_float (arg);
-  IN_FLOAT (d = rint (d), "fround", arg);
+  IN_FLOAT (d = emacs_rint (d), "fround", arg);
   return make_float (d);
 }
 
@@ -984,6 +988,7 @@ init_floatfns_very_early (void)
 void
 syms_of_floatfns (void)
 {
+  INIT_LRECORD_IMPLEMENTATION (float);
 
   /* Trig functions.  */