FSUB
Synopsis
FSUB(num1,num2)
Arguments
| num1 | The minuend. An expression that resolves to a number or numeric string. |
| num2 | The subtrahend. An expression that resolves to a number or numeric string. |
Description
The FSUB function subtracts num2 from num1, expressed as either numbers or as strings, and returns the result. Leading plus signs and leading and trailing zeros are ignored. A string is parsed as a number until a non-numeric character is encountered. Thus “7dwarves” is parsed as 7. If a num value is a null string or a non-numeric value, FSUB parses its value as 0 (zero).
The FSUB function performs a subtraction on two numbers and returns the result. You can perform the same operation using the subtraction operator (-). Refer to the Operators page of this manual.
Arithmetic Operations
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To perform arithmetic operations on floating point numbers, use the FADD, FSUB, FMUL, and FDIV functions, or use the standard arithmetic operators.
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To perform arithmetic operations on numeric strings, use the SADD, SSUB, SMUL, and SDIV functions.
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To perform integer division, use the DIV function. To perform modulo division, use the MOD function.
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To perform arithmetic operations on corresponding elements of dynamic arrays, use the ADDS, SUBS, MULS, DIVS, and MODS functions.
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To perform numeric comparison operations, use the SCMP function, or use the standard comparison operators.
Examples
The following example uses the FSUB function to subtract two floating point numbers:
a=11.95
b=10.25
PRINT FSUB(a,b); ! returns 1.7
