ftoi.3

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3 代码 · 共 71 行

.TH ftoi 3
.SH Name
ftoi, itof, dtoi, itod, gtoi, itog \- convert floating values between VAX and IEEE format
.SH Syntax
.nf
.ft B 
int ftoi(\fIvalue\fP)
    float *\fIvalue\fP;

int itof(\fIvalue\fP)
    float *\fIvalue\fP;

int dtoi(\fIvalue\fP)
    double *\fIvalue\fP;

int itod(\fIvalue\fP)
    double *\fIvalue\fP;

int gtoi(\fIvalue\fP)
    double *\fIvalue\fP;

int itog(\fIvalue\fP)
    double *\fIvalue\fP;
.fi
.ft R
.SH Description
The following C library functions convert floating 
values between VAX and IEEE formats.
.PP
The
.PN ftoi
function converts the specified VAX ffloat number to IEEE single-precision
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, underflow).
.PP
The
.PN itof
function converts the specified IEEE single-precision number to VAX ffloat 
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, overflow).
.PP
The
.PN dtoi
function converts the specified VAX dfloat number to IEEE double-precision
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, underflow).
.PP
The
.PN itod
function converts the specified IEEE double-precision number to VAX dfloat 
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, underflow or overflow).
.PP
The
.PN gtoi
function converts the specified VAX gfloat number to IEEE double-precision
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, underflow).
.PP
The
.PN itog
function converts the specified IEEE double-precision number to VAX gfloat 
format.
It returns zero if successful and nonzero without performing the conversion
if not successful (for example, underflow).