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VMS Help DCE, DCE_DTS, Application Routines, utc_mulftime *Conan The Librarian |
NAME
utc_mulftime - Multiplies a relative binary timestamp by a
floating-point value.
SYNOPSIS
#include <dce/utc.h>
int utc_mulftime( utc_t *result,
utc_t *utc1,
double factor );
PARAMETERS
Input
utc1
Relative binary timestamp. Use NULL if you want this routine to
use the current time for this parameter.
factor
Real scale factor (double-precision, floating-point value).
Output
result
Resulting relative binary timestamp.
DESCRIPTION
The utc_mulftime() routine multiplies a relative binary timestamp by
a floating-point value. Either or both may be negative; the resulting
relative binary timestamp has the appropriate sign. The unsigned
inaccuracy in the relative binary timestamp is also multiplied by the
absolute value of the floating-point value.
RETURN VALUES
0 Indicates that the routine executed successfully.
-1 Indicates an invalid time argument or invalid results.
EXAMPLES
The following example scales a relative time by a floating-point
factor and prints the result.
utc_t relutc, scaledutc;
struct tm scaledreltm;
char timstr[UTC_MAX_STR_LEN];
/* Assume relutc contains the time to scale. */
utc_mulftime(&scaledutc, /* Out: Scaled rel time */
&relutc, /* In: Rel time to scale */
17.65); /* In: Scale factor */
utc_ascreltime(timstr, /* Out: ASCII rel time */
UTC_MAX_STR_LEN, /* In: Input buffer length */
&scaledutc); /* In: Rel time to convert */
printf("%s\n",timstr);
/* Convert it to a tm structure and print it. */
utc_reltime(&scaledreltm, /* Out: Scaled rel tm */
(long *)0, /* Out: Scaled rel nano-sec */
(struct tm *)0, /* Out: Scaled rel inacc tm */
(long *)0, /* Out: Scd rel inacc nanos */
&scaledutc); /* In: Rel time to convert */
printf( "Approximately %d days, %d hours and %d minutes\n",
scaledreltm.tm_yday,
scaledreltm.tm_hour,
scaledreltm.tm_min );
RELATED INFORMATION
Functions: utc_multime
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