diff options
Diffstat (limited to 'generic/tclTest.c')
| -rw-r--r-- | generic/tclTest.c | 105 |
1 files changed, 104 insertions, 1 deletions
diff --git a/generic/tclTest.c b/generic/tclTest.c index b845d72..80dbbae 100644 --- a/generic/tclTest.c +++ b/generic/tclTest.c @@ -14,9 +14,11 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclTest.c,v 1.154 2010/09/27 19:42:38 msofer Exp $ + * RCS: @(#) $Id: tclTest.c,v 1.155 2010/11/28 23:20:11 kennykb Exp $ */ +#include <math.h> + #undef STATIC_BUILD #ifndef USE_TCL_STUBS # define USE_TCL_STUBS @@ -233,6 +235,9 @@ static int TestdelCmd(ClientData dummy, Tcl_Interp *interp, int argc, const char **argv); static int TestdelassocdataCmd(ClientData dummy, Tcl_Interp *interp, int argc, const char **argv); +static int TestdoubledigitsObjCmd(ClientData dummy, + Tcl_Interp* interp, + int objc, Tcl_Obj* const objv[]); static int TestdstringCmd(ClientData dummy, Tcl_Interp *interp, int argc, const char **argv); static int TestencodingObjCmd(ClientData dummy, @@ -569,6 +574,8 @@ Tcltest_Init( Tcl_CreateCommand(interp, "testdel", TestdelCmd, NULL, NULL); Tcl_CreateCommand(interp, "testdelassocdata", TestdelassocdataCmd, NULL, NULL); + Tcl_CreateObjCommand(interp, "testdoubledigits", TestdoubledigitsObjCmd, + NULL, NULL); Tcl_DStringInit(&dstring); Tcl_CreateCommand(interp, "testdstring", TestdstringCmd, NULL, NULL); @@ -1594,6 +1601,102 @@ TestdelassocdataCmd( } /* + *----------------------------------------------------------------------------- + * + * TestdoubledigitsCmd -- + * + * This procedure implements the 'testdoubledigits' command. It is + * used to test the low-level floating-point formatting primitives + * in Tcl. + * + * Usage: + * testdoubledigits fpval ndigits type ?shorten" + * + * Parameters: + * fpval - Floating-point value to format. + * ndigits - Digit count to request from Tcl_DoubleDigits + * type - One of 'shortest', 'Steele', 'e', 'f' + * shorten - Indicates that the 'shorten' flag should be passed in. + * + *----------------------------------------------------------------------------- + */ + +static int +TestdoubledigitsObjCmd(ClientData unused, + /* NULL */ + Tcl_Interp* interp, + /* Tcl interpreter */ + int objc, + /* Parameter count */ + Tcl_Obj* const objv[]) + /* Parameter vector */ +{ + static const char* options[] = { + "shortest", + "Steele", + "e", + "f", + NULL + }; + static const int types[] = { + TCL_DD_SHORTEST, + TCL_DD_STEELE, + TCL_DD_E_FORMAT, + TCL_DD_F_FORMAT + }; + + const Tcl_ObjType* doubleType; + double d; + int status; + int ndigits; + int type; + int decpt; + int signum; + char* str; + char* endPtr; + Tcl_Obj* strObj; + Tcl_Obj* retval; + + if (objc < 4 || objc > 5) { + Tcl_WrongNumArgs(interp, 1, objv, "fpval ndigits type ?shorten?"); + return TCL_ERROR; + } + status = Tcl_GetDoubleFromObj(interp, objv[1], &d); + if (status != TCL_OK) { + doubleType = Tcl_GetObjType("double"); + if (objv[1]->typePtr == doubleType + || TclIsNaN(objv[1]->internalRep.doubleValue)) { + status = TCL_OK; + memcpy(&d, &(objv[1]->internalRep.doubleValue), sizeof(double)); + } + } + if (status != TCL_OK + || Tcl_GetIntFromObj(interp, objv[2], &ndigits) != TCL_OK + || Tcl_GetIndexFromObj(interp, objv[3], options, "conversion type", + TCL_EXACT, &type) != TCL_OK) { + fprintf(stderr, "bad value? %g\n", d); + return TCL_ERROR; + } + type = types[type]; + if (objc > 4) { + if (strcmp(Tcl_GetString(objv[4]), "shorten")) { + Tcl_SetObjResult(interp, Tcl_NewStringObj("bad flag", -1)); + return TCL_ERROR; + } + type |= TCL_DD_SHORTEN_FLAG; + } + str = TclDoubleDigits(d, ndigits, type, &decpt, &signum, &endPtr); + strObj = Tcl_NewStringObj(str, endPtr-str); + ckfree(str); + retval = Tcl_NewListObj(1, &strObj); + Tcl_ListObjAppendElement(NULL, retval, Tcl_NewIntObj(decpt)); + strObj = Tcl_NewStringObj(signum ? "-" : "+", 1); + Tcl_ListObjAppendElement(NULL, retval, strObj); + Tcl_SetObjResult(interp, retval); + return TCL_OK; +} + +/* *---------------------------------------------------------------------- * * TestdstringCmd -- |