Floating-point number utility functions
Floating-point utility function provide run-time functions for handling floating-point number types defined within a schema. More...Functions | |
| EXTERNRT OSREAL | rtxGetMinusInfinity (void) |
| Returns the IEEE negative infinity value. | |
| EXTERNRT OSREAL | rtxGetMinusZero (void) |
| Returns the IEEE minus zero value. | |
| EXTERNRT OSREAL | rtxGetNaN (void) |
| Returns the IEEE Not-A-Number (NaN) value. | |
| EXTERNRT OSREAL | rtxGetPlusInfinity (void) |
| Returns the IEEE posative infinity value. | |
| EXTERNRT OSBOOL | rtxIsMinusInfinity (OSREAL value) |
| A utility function that compares the given input value to the IEEE 754 value for negative infinity. | |
| EXTERNRT OSBOOL | rtxIsMinusZero (OSREAL value) |
| A utility function that compares the given input value to the IEEE 754 value for minus zero. | |
| EXTERNRT OSBOOL | rtxIsNaN (OSREAL value) |
| A utility function that compares the given input value to the IEEE 754 value for Not-A-Number (NaN). | |
| EXTERNRT OSBOOL | rtxIsPlusInfinity (OSREAL value) |
| A utility function that compares the given input value to the IEEE 754 value for positive infinity. | |
Detailed Description
Floating-point utility function provide run-time functions for handling floating-point number types defined within a schema.
Function Documentation
| EXTERNRT OSREAL rtxGetMinusInfinity | ( | void | ) |
Returns the IEEE negative infinity value.
This is defined as 0xfff0000000000000 in IEEE standard 754. We assume the presence of the IEEE double type, that is, 64-bits of precision.
| EXTERNRT OSREAL rtxGetMinusZero | ( | void | ) |
Returns the IEEE minus zero value.
This is defined as 0x8000000000000000 in IEEE standard 754. We assume the presence of the IEEE double type, that is, 64-bits of precision.
| EXTERNRT OSREAL rtxGetNaN | ( | void | ) |
Returns the IEEE Not-A-Number (NaN) value.
This is defined as 0x7ff8000000000000 in IEEE standard 754. We assume the presence of the IEEE double type, that is, 64-bits of precision.
| EXTERNRT OSREAL rtxGetPlusInfinity | ( | void | ) |
Returns the IEEE posative infinity value.
This is defined as 0x7ff0000000000000 in IEEE standard 754. We assume the presence of the IEEE double type, that is, 64-bits of precision.
| EXTERNRT OSBOOL rtxIsMinusInfinity | ( | OSREAL | value | ) |
A utility function that compares the given input value to the IEEE 754 value for negative infinity.
- Parameters:
-
value The input real value.
| EXTERNRT OSBOOL rtxIsMinusZero | ( | OSREAL | value | ) |
A utility function that compares the given input value to the IEEE 754 value for minus zero.
- Parameters:
-
value The input real value.
| EXTERNRT OSBOOL rtxIsNaN | ( | OSREAL | value | ) |
A utility function that compares the given input value to the IEEE 754 value for Not-A-Number (NaN).
- Parameters:
-
value The input real value.
| EXTERNRT OSBOOL rtxIsPlusInfinity | ( | OSREAL | value | ) |
A utility function that compares the given input value to the IEEE 754 value for positive infinity.
- Parameters:
-
value The input real value.