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#### 9.45.7 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.

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