| .TH IM_COSTRA 3 "24 April 1991" |
| .SH NAME |
| im_costra, im_sintra, im_tantra, |
| im_acostra, im_asintra, im_atantra \- basic trig functions |
| .SH SYNOPSIS |
| #include <vips/vips.h> |
| |
| int im_costra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| int im_sintra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| int im_tantra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| int im_acostra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| int im_asintra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| int im_atantra(in, out) |
| .br |
| IMAGE *in, *out; |
| |
| .SH DESCRIPTION |
| Basic trig functions. The input image is mapped through either cos(3), sin(3) or |
| tan(3) and written to out. All work in degrees. |
| |
| The size and number of bands are unchanged, the output type is float, unless |
| the input is double, in which case the output is double. Non-complex images |
| only! |
| |
| .SH RETURN VALUE |
| Each function returns 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_add(3), im_lintra(3), im_abs(3), im_mean(3), im_logtra(3) |
| .SH COPYRIGHT |
| National Gallery, 1995. |
| .SH AUTHOR |
| J. Cupitt \- 21/7/93 |
