9.40.7 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.