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Remove obsolete VAMS $log function. 

This patch remove the old VAMS $log function. It could create confusion
with the Verilog $log task. Recent versions of VAMS and 1364-2005 use
$log10 for the base 10 logarithm.
This commit is contained in:
Cary R 2010-04-25 09:42:34 -07:00 committed by Stephen Williams
parent e6945db9b4
commit 2eb01605b1
5 changed files with 14 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
elab_pexpr.cc
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2009 Stephen Williams (steve@icarus.com)
* Copyright (c) 2000-2010 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
@ -414,9 +414,9 @@ NetExpr* PECallFunction::elaborate_pexpr(Design*des, NetScope*scope) const
return rtn;
}
/* These are only available with verilog-ams or icarus-misc. */
/* This is only available with verilog-ams or icarus-misc. */
if ((gn_icarus_misc_flag || gn_verilog_ams_flag) &&
(nm == "$log" || nm == "$abs")) {
(nm == "$abs")) {
if (parms_.size() != 1 || parms_[0] == 0) {
cerr << get_fileline() << ": error: " << nm
<< " takes a single argument." << endl;
@ -426,15 +426,11 @@ NetExpr* PECallFunction::elaborate_pexpr(Design*des, NetScope*scope) const
NetExpr*arg = parms_[0]->elaborate_pexpr(des, scope);
if (arg == 0) return 0;
NetESFunc*rtn;
if (nm == "$log") {
rtn = new NetESFunc(nm, IVL_VT_REAL, 1, 1);
} else {
/* This can return either a real or an arbitrary
* width vector, so set things to fail if this
* does not get replaced with a constant during
* elaboration. */
rtn = new NetESFunc(nm, IVL_VT_NO_TYPE, 0, 1);
}
rtn->set_line(*this);
rtn->cast_signed(true);
rtn->parm(0, arg);
@ -451,7 +447,7 @@ NetExpr* PECallFunction::elaborate_pexpr(Design*des, NetScope*scope) const
NetExpr*arg0 = parms_[0]->elaborate_pexpr(des, scope);
NetExpr*arg1 = parms_[1]->elaborate_pexpr(des, scope);
if (arg0 == 0 || arg1 == 0) return 0;
/* See $log above for why this has no type or width. */
/* See $abs above for why this has no type or width. */
NetESFunc*rtn = new NetESFunc(nm, IVL_VT_NO_TYPE, 0, 2);
rtn->set_line(*this);
rtn->cast_signed(true);

10
eval_tree.cc
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 1999-2009 Stephen Williams (steve@icarus.com)
* Copyright (c) 1999-2010 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
@ -1742,8 +1742,6 @@ NetExpr* evaluate_math_one_arg(NetExpr*&arg_, const char*name)
if (strcmp(name, "$ln") == 0) {
return new NetECReal(verireal(log(arg)));
} else if (strcmp(name, "$log") == 0) {
return new NetECReal(verireal(log10(arg)));
} else if (strcmp(name, "$log10") == 0) {
return new NetECReal(verireal(log10(arg)));
} else if (strcmp(name, "$exp") == 0) {
@ -1941,18 +1939,14 @@ NetExpr* NetESFunc::eval_tree(int prune_to_width)
}
if ((gn_icarus_misc_flag || gn_verilog_ams_flag) &&
(strcmp(nm, "$log") == 0 || strcmp(nm, "$abs") == 0)) {
(strcmp(nm, "$abs") == 0)) {
if (nparms() != 1 || parm(0) == 0) {
cerr << get_fileline() << ": error: " << nm
<< " takes a single argument." << endl;
return 0;
}
NetExpr*arg = parm(0)->dup_expr();
if (strcmp(nm, "$log") == 0) {
rtn = evaluate_math_one_arg(arg, nm);
} else {
rtn = evaluate_abs(arg);
}
delete arg;
}

4
va_math.txt
View File

@ -11,7 +11,7 @@ License.
Verilog-A math library built for Icarus Verilog
http://www.icarus.com/eda/verilog/
Copyright (C) 2007-2009 Cary R. (cygcary@yahoo.com)
Copyright (C) 2007-2010 Cary R. (cygcary@yahoo.com)
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
@ -38,7 +38,7 @@ like all Verilog-D system functions the name must be prefixed with a '$'.
For reference the functions are:
$ln(x) -- Natural logarithm
$log10(x) -- Decimal logarithm // $log is being deprecated!
$log10(x) -- Decimal logarithm
$exp(x) -- Exponential
$sqrt(x) -- Square root
$min(x,y) -- Minimum

11
vpi/va_math.c
View File

@ -70,11 +70,6 @@ typedef struct s_single_data {
} t_single_data;
static t_single_data va_single_data[]= {
{"$log", log10}, /* NOTE: The $log function is replaced by the
$log10 function to eliminate confusion with
the natural log. In C, "log" is ln and log10
is log-base-10. The $log is being left in for
compatibility. */
{"$abs", fabs},
{0, 0} /* Must be NULL terminated! */
};
@ -239,12 +234,6 @@ static PLI_INT32 va_single_argument_compiletf(PLI_BYTE8 *ud)
single_funcs_count*sizeof(va_single_t **));
single_funcs[single_funcs_count-1] = fun_data;
if (strcmp(name, "$log") == 0) {
vpi_printf("%s:%d: deprecation: ", vpi_get_str(vpiFile, callh),
(int)vpi_get(vpiLineNo, callh));
vpi_printf("Please use $log10() instead of $log()!\n");
}
/* vpi_scan() returning 0 (NULL) has already freed argv. */
return 0;
}

1
vpi/va_math.sft
View File

@ -4,7 +4,6 @@
#
# Single argument functions.
$log vpiSysFuncReal
$abs vpiSysFuncReal
# Double argument functions.
$min vpiSysFuncReal