7.20.1 Numeric conversion functions

• 7.20.1.1 The atof function
• 7.20.1.2 The atoi, atol, and atoll functions
• 7.20.1.3 The strtod, strtof, and strtold functions
• 7.20.1.4 The strtol, strtoll, strtoul, and strtoull functions

1

The functions atof, atoi, atol, and atoll need not affect the value of the integer expression errno on an error. If the value of the result cannot be represented, the behavior is undefined.