Texas Instruments TI-89 Developer's Guide

410
Appendix A: System Routines — Direct Floating Point Operations
TI
-
89 / TI
-
92 Plus Developer Guide
Not for Distribution
Beta Version January 26, 2001
is_float_negative_zero
Declaration:
Boolean
is_float_negative_zero
(Float
f
)
Category(ies):
Direct Floating Point Operations
Description:
Determines whether
f
represents 0
L
.
Inputs:
f
— Float.
Outputs:
Returns TRUE if
f
represents 0
L
. Otherwise returns FALSE.
Assumptions:
None
Side Effects:
None
Availability:
On AMS 1.05 and higher.
TI
-
89 / TI
-
92 Plus
Differences:
None
See Also: is_float_positive_zero, is_float_unsigned_zero, is0, is_complex0
Example:
is_float_negative_zero (-fabs (0.0)); /* Returns TRUE */

Texas Instruments TI-89 Specifications

General

Display size (HxV)	100 x 160 mm
Memory type	639K FLASH ROM, 188K bytes RAM
Compatible operating systems	Operating System 2.09
Battery type	AAA