floor
From cppreference.com
| Defined in header
<math.h>
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| float floorf( float arg );
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(since C99) | |
| double floor( double arg );
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| long double floorl( long double arg );
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(since C99) | |
Computes nearest integer not greater than arg.
Contents |
[edit] Parameters
| arg | - | floating point value |
[edit] Return value
Nearest integer not greater than arg
[edit] Notes
The integer value can be always represented by the given floating point type.
[edit] Example
Run this code
#include <stdio.h> #include <math.h> void report_floorf(float f) { printf("floorf(%5.2f)=%5.2f\n",f,floorf(f)); } /* end report_floorf() */ void demo_floorf() { report_floorf(9.1f); report_floorf(-9.1f); report_floorf(0.0f); } /* end demo_floorf() */
Output:
floorf( 9.10)= 9.00 floorf(-9.10)=-10.00 floorf( 0.00)= 0.00
[edit] See also
| nearest integer not less than the given value (function) |
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| (C99)
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nearest integer not greater in magnitude than the given value (function) |
| (C99)(C99)(C99)
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nearest integer, rounding away from zero in halfway cases (function) |
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C++ documentation for floor
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