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• Foundations
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• Float

float

A floating-point number.

A limited-precision representation of a real number. Typst uses 64 bits to store floats. Wherever a float is expected, you can also pass an integer.

You can convert a value to a float with this type's constructor.

Example

#3.14 \
#1e4 \
#(10 / 4)

Constructor

If a type has a constructor, you can call it like a function to create a new value of the type.

Converts a value to a float.

• Booleans are converted to 0.0 or 1.0.
• Integers are converted to the closest 64-bit float.
• Ratios are divided by 100%.
• Strings are parsed in base 10 to the closest 64-bit float. Exponential notation is supported.

#float(false) \
#float(true) \
#float(4) \
#float(40%) \
#float("2.7") \
#float("1e5")

value

bool int float ratio str

RequiredPositional

Positional parameters are specified in order, without names.

The value that should be converted to a float.

Definitions

Functions and types and can have associated definitions. These are accessed by specifying the function or type, followed by a period, and then the definition's name.

is-nan

Checks if a float is not a number.

In IEEE 754, more than one bit pattern represents a NaN. This function returns true if the float is any of those bit patterns.

View example

#float.is-nan(0) \
#float.is-nan(1) \
#float.is-nan(calc.nan)

is-infinite

Checks if a float is infinite.

For floats, there is positive and negative infinity. This function returns true if the float is either positive or negative infinity.

View example

#float.is-infinite(0) \
#float.is-infinite(1) \
#float.is-infinite(calc.inf)

signum

Calculates the sign of a floating point number.

• If the number is positive (including +0.0), returns 1.0.
• If the number is negative (including -0.0), returns -1.0.
• If the number is calc.nan, returns calc.nan.

View example

#(5.0).signum() \
#(-5.0).signum() \
#(0.0).signum() \

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