9.31.7 Math Builtins
The following built-in functions may be used to generate a
floating-point value. All return a floating-point value except
`$cvi', `$int', and `$sgn', which return an integer
value.
$acos(expr)- Returns the floating point arccosine of expr.
$asin(expr)- Returns the floating point arcsine of expr.
$atan(expr)- Returns the floating point arctangent of expr.
$atan2(expr1,expr2)- Returns the floating point arctangent of expr1 / expr2.
$ceil(expr)- Returns the smallest integer not less than expr as floating point.
$cosh(expr)- Returns the floating point hyperbolic cosine of expr.
$cos(expr)- Returns the floating point cosine of expr.
$cvf(expr)- Returns the integer value expr converted to floating-point.
$cvi(expr)- Returns the floating point value expr converted to integer.
$exp(expr)- Returns the floating point value e ^ expr.
$fabs(expr)- Returns the floating point absolute value of expr.
$floor(expr)- Returns the largest integer that is not greater than expr as
floating point.
$fmod(expr1,expr2)- Returns the floating point remainder of expr1 / expr2.
$int(expr)- Returns 1 if expr evaluates to an integer, zero otherwise.
$ldexp(expr1,expr2)- Returns the floating point value expr1 * 2 ^ expr2.
$log10(expr)- Returns the base 10 logarithm of expr.
$log(expr)- Returns the natural logarithm of expr.
$max(expr1,expr2)- Returns the floating point maximum of expr1 and expr2.
$min(expr1,expr2)- Returns the floating point minimum of expr1 and expr2.
$pow(expr1,expr2)- Returns the floating point value expr1 ^ expr2.
$round(expr)- Returns the nearest integer to expr as a floating point number.
$sgn(expr)- Returns -1, 0, or 1 based on the sign of expr.
$sin(expr)- Returns the floating point sine of expr.
$sinh(expr)- Returns the floating point hyperbolic sine of expr.
$sqrt(expr)- Returns the floating point square root of expr.
$tan(expr)- Returns the floating point tangent of expr.
$tanh(expr)- Returns the floating point hyperbolic tangent of expr.
$trunc(expr)- Returns the integer value of expr truncated towards zero as
floating point.