7.5.8 General utility functions
General utility functions are as follows.
Table 7.10 | General Utility Functions |
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atof
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Conversion of character string to floating-point number (double type)
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atoff
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Conversion of character string to floating-point number (float type)
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atoi
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Conversion of character string to integer (int type)
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atol
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Conversion of character string to integer (long int type)
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atoll [V1.07 or later]
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Conversion of character string to integer (long long int type) (C99)
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strtod
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Conversion of character string to floating-point number (double type) (storing pointer to last character string
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strtof
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Conversion of character string to floating-point number (float type) (storing pointer to last character string
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strtold [V1.07 or later]
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Conversion of character string to floating-point number (long double type) (storing pointer to last character string) (C99)
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strtol
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Conversion of character string to integer (long int type) and storing pointer to last character string
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strtoll [V1.07 or later]
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Conversion of character string to integer (long long int type) and storing pointer to last character string (C99)
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strtoul
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Conversion of character string to integer (unsigned long int type) and storing pointer to last character string
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strtoull [V1.07 or later]
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Conversion of character string to integer (unsigned long long int type) and storing pointer to last character string (C99)
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rand
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Pseudorandom number sequence generation
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srand
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Setting of type of pseudorandom number sequence
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calloc [V1.02 or later]
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Allocates dynamic memory that is initialized by 0.
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free [V1.02 or later]
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Releases dynamic memory
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malloc [V1.02 or later]
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Allocates dynamic memory
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realloc [V1.02 or later]
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Re-allocates dynamic memory
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abort
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Terminates the program
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bsearch
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Binary search
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qsort
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Sort
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abs
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Output absolute value (int type)
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div
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Division (int type)
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labs
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Output absolute value (long type)
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ldiv
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Division (long type)
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llabs [V1.07 or later]
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Output absolute value (long long type) (C99)
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lldiv [V1.07 or later]
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Division (long long type) (C99)
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