utc_mulftime(3dts)

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
Function: utc_multime(3dts)