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trans.ops
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trans.ops
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/*
* trans.ops
*/
=head1 NAME
trans.ops - Transcendental Opcodes
=head1 DESCRIPTION
Addition library of operations to perform various transcendental operations such
as logarithmics and trigonometrics.
To use this library of ops, add this directive to your PIR:
.loadlib 'trans_ops'
=over 4
=cut
########################################
=item B<acos>(out NUM, in NUM)
Set $1 to the arc cosine (in radians) of $2.
=cut
inline op acos(out NUM, in NUM) :base_math {
$1 = acos((FLOATVAL)$2);
}
########################################
=item B<asec>(out NUM, in NUM)
Set $1 to the arc secant (in radians) of $2.
=cut
inline op asec(out NUM, in NUM) :base_math {
$1 = acos(((FLOATVAL)1) / ((FLOATVAL)$2));
}
########################################
=item B<asin>(out NUM, in NUM)
Set $1 to the arc sine (in radians) of $2.
=cut
inline op asin(out NUM, in NUM) :base_math {
$1 = asin((FLOATVAL)$2);
}
########################################
=item B<atan>(out NUM, in NUM)
=item B<atan>(out NUM, in NUM, in NUM)
The two-argument versions set $1 to the arc tangent (in radians) of $2.
The three-argument versions set $1 to the arc tangent (in radians) of
$2 / $3, taking account of the signs of the arguments in determining the
quadrant of the result.
=cut
inline op atan(out NUM, in NUM) :base_math {
$1 = atan((FLOATVAL)$2);
}
inline op atan(out NUM, in NUM, in NUM) :base_math {
$1 = atan2((FLOATVAL)$2, (FLOATVAL)$3);
}
########################################
=item B<cos>(out NUM, in NUM)
Set $1 to the cosine of $2 (given in radians).
=cut
inline op cos(out NUM, in NUM) :base_math {
$1 = cos((FLOATVAL)$2);
}
########################################
=item B<cosh>(out NUM, in NUM)
Set $1 to the hyperbolic cosine of $2 (given in radians).
=cut
inline op cosh(out NUM, in NUM) :base_math {
$1 = cosh((FLOATVAL)$2);
}
########################################
=item B<cot>(out NUM, in NUM)
Set $1 to the cotangent of $2 (given in radians).
=cut
inline op cot(out NUM, in NUM) :base_math {
$1 = ((FLOATVAL)1) / tan((FLOATVAL)$2);
}
########################################
=item B<csc>(out NUM, in NUM)
Set $1 to the cosecant of $2 (given in radians).
=cut
inline op csc(out NUM, in NUM) :base_math {
$1 = ((FLOATVAL)1) / sin((FLOATVAL)$2);
}
########################################
=item B<exp>(out NUM, in NUM)
Set $1 to I<e> raised to the power $2. I<e> is the base of the natural
logarithm.
=cut
inline op exp(out NUM, in NUM) :base_math {
$1 = exp((FLOATVAL)$2);
}
########################################
=item B<ln>(out NUM, in NUM)
Set $1 to the natural (base I<e>) logarithm of $2.
=cut
inline op ln(out NUM, in NUM) :base_math {
$1 = log((FLOATVAL)$2);
}
########################################
=item B<log10>(out NUM, in NUM)
Set $1 to the base 10 logarithm of $2.
=cut
inline op log10(out NUM, in NUM) :base_math {
$1 = log10((FLOATVAL)$2);
}
########################################
=item B<log2>(out NUM, in NUM)
Set $1 to the base 2 logarithm of $2.
=cut
op log2(out NUM, in NUM) :base_math {
const FLOATVAL temp = log((FLOATVAL)2.0);
$1 = log((FLOATVAL)$2) / temp;
}
########################################
=item B<sec>(out NUM, in NUM)
Set $1 to the secant of $2 (given in radians).
=cut
inline op sec(out NUM, in NUM) :base_math {
$1 = ((FLOATVAL)1) / cos((FLOATVAL)$2);
}
########################################
=item B<sech>(out NUM, in NUM)
Set $1 to the hyperbolic secant of $2 (given in radians).
=cut
inline op sech(out NUM, in NUM) :base_math {
$1 = ((FLOATVAL)1) / cosh((FLOATVAL)$2);
}
########################################
=item B<sin>(out NUM, in NUM)
Set $1 to the sine of $2 (given in radians).
=cut
inline op sin(out NUM, in NUM) :base_math {
$1 = sin((FLOATVAL)$2);
}
########################################
=item B<sinh>(out NUM, in NUM)
Set $1 to the hyperbolic sine of $2 (given in radians).
=cut
inline op sinh(out NUM, in NUM) :base_math {
$1 = sinh((FLOATVAL)$2);
}
########################################
=item B<tan>(out NUM, in NUM)
Set $1 to the tangent of $2 (given in radians).
=cut
inline op tan(out NUM, in NUM) :base_math {
$1 = tan((FLOATVAL)$2);
}
########################################
=item B<tanh>(out NUM, in NUM)
Set $1 to the hyperbolic tangent of $2 (given in radians).
=cut
inline op tanh(out NUM, in NUM) :base_math {
$1 = tanh((FLOATVAL)$2);
}
=item B<pow>(out NUM, in NUM, in NUM)
=item B<pow>(out NUM, in NUM, in INT)
=item B<pow>(invar PMC, invar PMC, invar PMC)
=item B<pow>(invar PMC, invar PMC, in INT)
=item B<pow>(invar PMC, invar PMC, in NUM)
Set $1 to $2 raised to the power $3.
=cut
inline op pow(out NUM, in NUM, in NUM) {
$1 = pow((FLOATVAL)$2, (FLOATVAL)$3);
}
inline op pow(invar PMC, invar PMC, invar PMC) {
const FLOATVAL a = VTABLE_get_number(interp, $2);
const FLOATVAL b = VTABLE_get_number(interp, $3);
const FLOATVAL c = pow(a, b);
if (PMC_IS_NULL($1))
$1 = Parrot_pmc_new(interp, Parrot_hll_get_ctx_HLL_type(interp, enum_class_Float));
else
$1 = Parrot_pmc_new(interp, $1->vtable->base_type);
VTABLE_set_number_native(interp, $1, c);
}
inline op pow(invar PMC, invar PMC, in INT) {
const FLOATVAL a = VTABLE_get_number(interp, $2);
const FLOATVAL b = (FLOATVAL)$3;
const FLOATVAL c = pow(a, b);
if (PMC_IS_NULL($1))
$1 = Parrot_pmc_new(interp, Parrot_hll_get_ctx_HLL_type(interp, enum_class_Float));
else
$1 = Parrot_pmc_new(interp, $1->vtable->base_type);
VTABLE_set_number_native(interp, $1, c);
}
inline op pow(invar PMC, invar PMC, in NUM) {
const FLOATVAL a = VTABLE_get_number(interp, $2);
const FLOATVAL c = pow(a, $3);
if (PMC_IS_NULL($1))
$1 = Parrot_pmc_new(interp, Parrot_hll_get_ctx_HLL_type(interp, enum_class_Float));
else
$1 = Parrot_pmc_new(interp, $1->vtable->base_type);
VTABLE_set_number_native(interp, $1, c);
}
inline op pow(out NUM, in NUM, in INT) {
FLOATVAL n2 = $2;
FLOATVAL res = 1.0;
INTVAL e = $3;
int s = 1;
if (e != 0) {
if (e < 0) {
s = -1;
e = -e;
}
}
while (e) {
if (e & 1) {
res *= n2;
}
n2 *= n2;
e >>= 1;
}
if (s < 0) {
res = 1.0/res;
}
$1 = res;
}
=back
=head1 COPYRIGHT
Copyright (C) 2010-2011, Parrot Foundation.
=head1 LICENSE
This program is free software. It is subject to the same license
as the Parrot interpreter itself.
=cut
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/