Rounds the given float to single-precision format (32 bits) and returns it as a double-float (64 bits).

lispworks

round-to-single-precision `float` => `double-float`

float⇩ |
A float. |

double-float |
A double-float with single-float precision. |

The function `round-to-single-precision`

rounds `float` to single-precision format (32 bits) and returns the value as a double-float (64 bits). This function allows you to model the rounding behavior of a machine or implementation that performs 32-bit floating point arithmetic.

LispWorks supports multiple floating point formats: short-float (only on 32-bit LispWorks), single-float and double-float. If this function is called with a single-float or a short-float, it returns the equivalent double-float, that is, it is the same as evaluating:

(coercefloat'double-float)

LispWorks 4.4 and previous on Windows and Linux platforms supports just one floating point format. In LispWorks 5.0 and later, at least two floating point formats are supported on all platforms.

CL-USER 197 > pi 3.141592653589793D0 CL-USER 198 > round-to-single-precision pi 3.1415927410125732D0

*LispWorks® User Guide and Reference Manual - 01 Dec 2021 19:30:41*