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float.c: handle round-up-to-denorm correctly.

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This commit is contained in:
H. Peter Anvin 2007-10-30 01:13:09 -07:00
parent 84b5d2c539
commit 4a63c20755
1 changed files with 3 additions and 8 deletions

11
float.c

@ -724,20 +724,15 @@ static int to_float(const char *str, int s, uint8_t * result,
exponent--;
if (exponent >= 2 - expmax && exponent <= expmax) {
type = FL_NORMAL;
} else if (exponent < 2 - expmax &&
exponent >= 2 - expmax - fmt->mantissa) {
type = FL_DENORMAL;
} else if (exponent > 0) {
if (pass0 == 1)
error(ERR_WARNING|ERR_WARN_FL_OVERFLOW,
"overflow in floating-point constant");
type = FL_INFINITY;
} else {
/* underflow */
if (pass0 == 1)
error(ERR_WARNING|ERR_WARN_FL_UNDERFLOW,
"underflow in floating-point constant");
type = FL_ZERO;
/* underflow or denormal; the denormal code handles
actual underflow. */
type = FL_DENORMAL;
}
} else {
/* Zero */