Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30565-738e569de9) Lines: 1467 1530 95.9 % Date: 2025-11-30 09:23:42 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296417
RgX_gtofp_bit	7031580
RgX_normalize1	35901
X2XP1	5990519
ZX_Uspensky	1313877
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15273
ZX_graeffe	5390
ZX_realroots_irred	48653
ZX_rescale2prim	2233843
ZX_sturm	6395
ZX_sturm_i	123169
ZX_sturm_irred	116774
ZX_sturmpart	1128231
ZX_to_ZiX	16458535
ZiX_sqr	99041032
_gen_nored	11200373
_gen_one	14473421
_gen_zero	326145
_intervalcmp	0
_mp_add	24660579
_mp_cmul	34761158
_mp_mul	4374475
_mp_sqr	6298362
_mp_sub	0
_sqrtnr	22708
a_posteriori_errors	537230
abs_update	8005178
abs_update_r	778656
all_roots	536126
append_clone	1614179
bkeval_single_power	5236009
check_ab	1178857
checkbound	2354844
checkvalidpol	267060
clean_roots	536170
cleanroots	231763
cmp_complex_appr	2238534
conformal_basecase	1403896
conformal_mapping	467927
conformal_pol	1404016
dblexp	6549051
dbllog2	302086691
dft	502372
dual_modulus	1012474
eval_rel_pol	13138394
fft	14159354
fft2	7462
findpower	40958594
fix_roots	537224
fix_roots1	398471
fujiwara_bound	2271769
fujiwara_bound_real	1406903
graeffe	49506358
homothetie	1610112
homothetie2n	9957787
homothetie_gauss	36498051
ind_maxlog2	902679
initdft	996352
isexactpol	239753
isexactscalar	931714
isreal	961907
isvalidcoeff	1230235
logmax_modulus	4450959
logmin_modulus	1614810
logmodulus	606757
logpre_modulus	606757
logradius	493973
lower_bound	40958172
mydbllog2i	226428713
mydbllog2r	56183044
mydbllogr	9546810
mygprec	63758708
mygprec_absolute	4339959
mygprec_special	537231
mygprecrc	215197930
mygprecrc_special	2179190
myshiftic	135803532
myshiftrc	35507013
newton_polygon	5507226
optimize_split	493980
parameters	493979
pol_to_gaussint	17589308
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166722
quicktofp	6979093
realroots	50627
refine_F	502366
refine_H	2460499
root_error	1912569
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289415
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494342
split_0_1	468292
split_0_2	468292
split_1	467929
split_2	493977
split_complete	1525909
split_fromU	493979
split_pols	166727
splitcauchy	166730
splitpoleval	5235588
tocomplex	1213957
update_radius	493976
usp	1126061

Generated by: LCOV version 1.16