Homogeneous General-Computational Operations Functions
Many routines in the
libbfp754
Library are more optimized for Intel® microprocessors than for non-Intel microprocessors.
The Intel® IEEE 754-2008 Binary Conformance Library supports the following functions for homogeneous general-computational operations:
round_integral_nearest_even
Description:
The function rounds floating-point number
x
to its nearest integral value, with the halfway (tied) case rounding to even.
Calling interface:
float __binary32_round_integral_nearest_even(float x);
double __binary64_round_integral_nearest_even(double x);
round_integral_nearest_away
Description:
The function rounds floating-point number
x
to its nearest integral value, with the halfway (tied) case rounding away from zero.
Calling interface:
float __binary32_round_integral_nearest_away(float x);
double __binary64_round_integral_nearest_away(double x);
round_integral_zero
Description:
The function rounds floating-point number
x
to the closest integral value toward zero.
Calling interface:
float __binary32_round_integral_zero(float x);
double __binary64_round_integral_zero(double x);
round_integral_positive
Description:
The function rounds floating-point number
x
to the closest integral value toward positive infinity.
Calling interface:
float __binary32_round_integral_positive(float x);
double __binary64_round_integral_positive(double x);
round_integral_negative
Description:
The function rounds floating-point number
x
to the closest integral value toward negative infinity.
Calling interface:
float __binary32_round_integral_negative(float x);
double __binary64_round_integral_negative(double x);
round_integral_exact
Description:
The function rounds floating-point number
x
to the closest integral value according to the rounding-direction applicable.
Calling interface:
float __binary32_round_integral_exact(float x);
double __binary64_round_integral_exact(double x);
next_up
Description:
The function returns the least floating-point number in the same format as
x
that is greater than
x
.
Calling interface:
float __binary32_next_up(float x);
double __binary64_next_up(double x);
next_down
Description:
The function returns the largest floating-point number in the same format as
x
that is less than
x
.
Calling interface:
float __binary32_next_down(float x);
double __binary64_next_down(double x);
rem
Description:
The function returns the remainder of
x
and
y
.
Calling interface:
float __binary32_rem(float x, float y);
double __binary64_rem(double x, double y);
minnum
Description:
The function returns the minimal value of
x
and
y
.
Calling interface:
float __binary32_minnum(float x, float y);
double __binary64_minnum(double x, double y);
maxnum
Description:
The function returns the maximal value of
x
and
y
.
Calling interface:
float __binary32_maxnum(float x, float y);
double __binary64_maxnum(double x, double y);
minnum_mag
Description:
The function returns the minimal absolute value of
x
and
y
.
Calling interface:
float __binary32_minnum_mag(float x, float y);
double __binary64_minnum_mag(double x, double y);
maxnum_mag
Description:
The function returns the maximal absolute value of
x
and
y
.
Calling interface:
float __binary32_maxnum_mag(float x, float y);
double __binary64_maxnum_mag(double x, double y);
scalbn
Description:
The function computes
x
X
2
n
n
.
Calling interface:
float __binary32_scalbn(float x, int n);
double __binary64_scalbn(double x, int n);
ilogb
Description:
The function returns the exponent part of
x
as integer.
Calling interface:
int __binary32_ilogb(float x);
int __binary64_ilogb(double x);