gcvt

Syntax

void _gcvt(double val, int digits, char s[]);

Function

The numbervalis converted to a stringscontaining a decimal point and a possible sign byte.

Parameters

val Number to be converted.

digits

Number of significant digits.

s

String, which contains the converted number. If the string size is too small, the string stays unchanged.

Return Values

—

char s[15];float val1 = 3.1415926535;float val2 = 271828.18284;_gcvt(val1, 10, s);writeToLogEx("val1: %f: s: %s", val1, s);_gcvt(val2, 9, s);writeToLogEx("val2: %f: s: %s", val2, s);_gcvt(val2, 5, s);writeToLogEx("val2: %f: s: %s", val2, s);_gcvt(val2, 20, s); // String size too small, string stays unchangedwriteToLogEx("val2: %f: s: %s", val2, s);... Result: val1: 3.141593: s: 3.141592654val2: 271828.182840: s: 271828.182val2: 271828.182840: s: 2.7183e+005val2: 271828.182840: s: 2.7183e+005

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