Floating-Point Routines Are Not Reentrant

ID: Q40587

6.00 6.00a 6.00ax 7.00 | 1.00 1.50 1.51 1.52

MS-DOS                 | WINDOWS
kbprg

The information in this article applies to:

The Microsoft C run-time library math routines are nonnreentrant and accordingly do not save and restore the registers used on the 80x87 floating-point coprocessor.

If you want to develop a program that requires the math coprocessor to be reentrant, you must provide your own routines that save and restore the registers of the coprocessor.

Additional reference words: kbinf 6.00 6.00a 6.00ax 7.00 1.00 1.50 KBCategory: kbprg KBSubcategory: CRTIss Keywords : kb16bitonly

Last Reviewed: July 18, 1997