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| Code Block |
|---|
float f(float x) {
   return x * 0.1f;
}
float g(float x) {
   return x * 0.1;
}
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Function f is allowed to return a value wider than float, but function g (which uses the wider constant) is not.
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| Code Block | ||
|---|---|---|
| ||
float calcPercentage(float value) {
   return value * 0.1f;
}
void floatRoutine(void) {
float value = 99.0f;
long double percentage;
percentage = calcPercentage(value);
}
|
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| Code Block | ||
|---|---|---|
| ||
float calcPercentage(float value) {
   return (float)(value * 0.1f);
}
void floatRoutine(void) {
float value = 99.0f;
long double percentage;
percentage = calcPercentage(value);
}
|
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| Code Block | ||
|---|---|---|
| ||
float calcPercentage(float value) {
volatile float result;
result = value * 0.1f;
   return result;
}
void floatRoutine(void) {
float value = 99.0f;
long double percentage;
percentage = calcPercentage(value);
}
|
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| Wiki Markup |
|---|
\[[ISO/IEC 9899:1999|AA. References#ISO/IEC 9899-1999]\] \[[WG14/N1396|AA. References#WG14/N1396]\] |
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FLP36-C. Beware of precision loss when converting integral types to floating point 05. Floating Point (FLP) 06. Arrays (ARR)