diff options
Diffstat (limited to 'generic/tclExecute.c')
| -rw-r--r-- | generic/tclExecute.c | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/generic/tclExecute.c b/generic/tclExecute.c index 82aaf62..5161b17 100644 --- a/generic/tclExecute.c +++ b/generic/tclExecute.c @@ -11,7 +11,7 @@ * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclExecute.c,v 1.94.2.13 2005/08/05 19:19:11 kennykb Exp $ + * RCS: @(#) $Id: tclExecute.c,v 1.94.2.14 2005/08/29 16:37:42 kennykb Exp $ */ #include "tclInt.h" @@ -5462,7 +5462,7 @@ ExprRoundFunc(interp, eePtr, clientData) Tcl_Obj **stackPtr; /* Cached evaluation stack base pointer. */ register int stackTop; /* Cached top index of evaluation stack. */ Tcl_Obj *valuePtr, *resPtr; - double d; + double d, f, i; int result; /* @@ -5488,22 +5488,35 @@ ExprRoundFunc(interp, eePtr, clientData) result = TCL_OK; resPtr = valuePtr; } else { + + /* + * Round the number to the nearest integer. I'd like to use round(), + * but it's C99 (or BSD), and not yet universal. + */ + d = valuePtr->internalRep.doubleValue; + f = modf(d, &i); if (d < 0.0) { - if (d <= Tcl_WideAsDouble(LLONG_MIN)-0.5) { + if (f <= -0.5) { + i += -1.0; + } + if (i <= Tcl_WideAsDouble(LLONG_MIN)) { goto tooLarge; - } else if (d <= (((double) (long) LONG_MIN) - 0.5)) { - resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(d - 0.5)); + } else if (d <= (double) LONG_MIN) { + resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(i)); } else { - resPtr = Tcl_NewLongObj((long) (d - 0.5)); + resPtr = Tcl_NewLongObj((long) i); } } else { - if (d >= Tcl_WideAsDouble(LLONG_MAX)+0.5) { + if (f >= 0.5) { + i += 1.0; + } + if (i >= Tcl_WideAsDouble(LLONG_MAX)) { goto tooLarge; - } else if (d >= (((double) LONG_MAX + 0.5))) { - resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(d + 0.5)); + } else if (i >= (double) LONG_MAX) { + resPtr = Tcl_NewWideIntObj(Tcl_DoubleAsWide(i)); } else { - resPtr = Tcl_NewLongObj((long) (d + 0.5)); + resPtr = Tcl_NewLongObj((long) i); } } } |