float scalbnf(float x, int n)
{
- /* make sure result is stored as double on overflow or underflow */
- volatile float z;
float scale;
if (n > 127) {
x *= 0x1p127f;
n -= 127;
if (n > 127) {
- z = x * 0x1p127f;
- return z;
+ STRICT_ASSIGN(float, x, x * 0x1p127f);
+ return x;
}
}
} else if (n < -126) {
x *= 0x1p-126f;
n += 126;
if (n < -126) {
- z = x * 0x1p-126f;
- return z;
+ STRICT_ASSIGN(float, x, x * 0x1p-126f);
+ return x;
}
}
}
SET_FLOAT_WORD(scale, (uint32_t)(0x7f+n)<<23);
- z = x * scale;
- return z;
+ STRICT_ASSIGN(float, x, x * scale);
+ return x;
}