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Diffstat (limited to 'newlib/libm/common/s_trunc.c')
| -rw-r--r-- | newlib/libm/common/s_trunc.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/newlib/libm/common/s_trunc.c b/newlib/libm/common/s_trunc.c index c3ca154d9..daeb7910a 100644 --- a/newlib/libm/common/s_trunc.c +++ b/newlib/libm/common/s_trunc.c @@ -8,6 +8,35 @@ * is preserved. * ==================================================== */ +/* +FUNCTION +<<trunc>>, <<truncf>>--round to integer, towards zero +INDEX + trunc +INDEX + truncf + +ANSI_SYNOPSIS + #include <math.h> + double trunc(double <[x]>); + float truncf(float <[x]>); + +DESCRIPTION + The <<trunc>> functions round their argument to the integer value, in + floating format, nearest to but no larger in magnitude than the + argument, regardless of the current rounding direction. (While the + "inexact" floating-point exception behavior is unspecified by the C + standard, the <<trunc>> functions are written so that "inexact" is not + raised if the result does not equal the argument, which behavior is as + recommended by IEEE 754 for its related functions.) + +RETURNS +<[x]> truncated to an integral value. + +PORTABILITY +ANSI C, POSIX + +*/ #include "fdlibm.h" |