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/*-----------------------------------------------------------------*-C-*---
* File: handc/runtime/numsimpl.ci
*
* Copyright (C)1997 Donovan Kolbly <d.kolbly@rscheme.org>
* as part of the RScheme project, licensed for free use.
* See <http://www.rscheme.org/> for the latest information.
*
* File version: 1.2
* File mod date: 1997.11.29 23:10:53
* System build: v0.7.2, 97.12.21
*
*------------------------------------------------------------------------*/
obj basic_plus( obj x, obj y )
{
if (OBJ_ISA_FIXNUM(x))
{
if (OBJ_ISA_FIXNUM(y))
return FX_ADD(x,y);
else if (LONGFLOAT_P(y))
return make_float( fx2int(x) + extract_float(y) );
}
else if (LONGFLOAT_P(x))
{
if (OBJ_ISA_FIXNUM(y))
return make_float( extract_float(x) + fx2int(y) );
else if (LONGFLOAT_P(y))
return make_float( extract_float(x) + extract_float(y) );
}
scheme_error( "(base+ ~s ~s): argument not basic", 2, x, y );
return ZERO;
}
obj basic_minus( obj x, obj y )
{
if (OBJ_ISA_FIXNUM(x))
{
if (OBJ_ISA_FIXNUM(y))
return FX_SUB(x,y);
else if (LONGFLOAT_P(y))
return make_float( fx2int(x) - extract_float(y) );
}
else if (LONGFLOAT_P(x))
{
if (OBJ_ISA_FIXNUM(y))
return make_float( extract_float(x) - fx2int(y) );
else if (LONGFLOAT_P(y))
return make_float( extract_float(x) - extract_float(y) );
}
scheme_error( "(base- ~s ~s): argument not basic", 2, x, y );
return ZERO;
}
obj basic_mul( obj x, obj y )
{
if (OBJ_ISA_FIXNUM(x))
{
if (OBJ_ISA_FIXNUM(y))
return FX_MUL(x,y);
else if (LONGFLOAT_P(y))
return make_float( fx2int(x) * extract_float(y) );
}
else if (LONGFLOAT_P(x))
{
if (OBJ_ISA_FIXNUM(y))
return make_float( extract_float(x) * fx2int(y) );
else if (LONGFLOAT_P(y))
return make_float( extract_float(x) * extract_float(y) );
}
scheme_error( "(base* ~s ~s): argument not basic", 2, x, y );
return ZERO;
}
obj basic_div( obj x, obj y )
{
if (OBJ_ISA_FIXNUM(x))
{
if (OBJ_ISA_FIXNUM(y))
return make_float( (double)fx2int(x) / (double)fx2int(y) );
else if (LONGFLOAT_P(y))
return make_float( fx2int(x) / extract_float(y) );
}
else if (LONGFLOAT_P(x))
{
if (OBJ_ISA_FIXNUM(y))
return make_float( extract_float(x) / fx2int(y) );
else if (LONGFLOAT_P(y))
return make_float( extract_float(x) / extract_float(y) );
}
scheme_error( "(base/ ~s ~s): argument not basic", 2, x, y );
return ZERO;
}
static int float_cmp( IEEE_64 a, IEEE_64 b )
{
if (a < b)
return -1;
else if (a > b)
return 1;
else
return 0;
}
int basic_cmp( obj x, obj y )
{
if (OBJ_ISA_FIXNUM(x))
{
if (OBJ_ISA_FIXNUM(y))
{
if (EQ(x,y))
return 0;
else if (FX_LT(x,y))
return -1;
else
return 1;
}
else if (LONGFLOAT_P(y))
{
return float_cmp( (IEEE_64)fx2int(x), extract_float(y) );
}
}
else if (LONGFLOAT_P(x))
{
if (OBJ_ISA_FIXNUM(y))
return float_cmp( extract_float(x), (IEEE_64)fx2int(y) );
else if (LONGFLOAT_P(y))
return float_cmp( extract_float(x), extract_float(y) );
}
scheme_error( "(base-cmp ~s ~s): argument not basic", 2, x, y );
return NO;
}
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