afp

Convert ASCII string variable into fast floating point

Accepts the address of the ASCII string in C format that is converted into an FFP floating point number.

The string is expected in this Format: {S}{digits}{'.'}{digits}{'E'}{S}{digits} <*******MANTISSA*******><***EXPONENT***>

Syntax rules:

Both signs are optional and are '+' or '-'. The mantissa must be present. The exponent need not be present. The mantissa may lead with a decimal point. The mantissa need not have a decimal point. Examples: All of these values represent the number fourty-two.

Floating point range:

Fast floating point supports the value zero and non-zero values within the following bounds -

-9.22337177 x 10 > -number > -2.71050535 x 10

Precision:

This conversion results in a 24 bit precision with guaranteed error less than or equal to one-half least significant bit.

string

Pointer to the ASCII string to be converted.

string

points to the character which terminated the scan

equ

fast floating point equivalent