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 30634-7c77b4d1a9) Lines: 1467 1530 95.9 % Date: 2026-01-25 09:23:13 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296165
RgX_gtofp_bit	7029008
RgX_normalize1	35733
X2XP1	5989696
ZX_Uspensky	1313726
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15202
ZX_graeffe	5390
ZX_realroots_irred	48565
ZX_rescale2prim	2233489
ZX_sturm	6395
ZX_sturm_i	122971
ZX_sturm_irred	116576
ZX_sturmpart	1128226
ZX_to_ZiX	16449631
ZiX_sqr	99013399
_gen_nored	11198949
_gen_one	14470771
_gen_zero	326010
_intervalcmp	0
_mp_add	24659034
_mp_cmul	34760818
_mp_mul	4374439
_mp_sqr	6298185
_mp_sub	0
_sqrtnr	22594
a_posteriori_errors	536975
abs_update	8003440
abs_update_r	778528
all_roots	535875
append_clone	1613501
bkeval_single_power	5235065
check_ab	1178853
checkbound	2354836
checkvalidpol	266892
clean_roots	535920
cleanroots	231763
cmp_complex_appr	2237246
conformal_basecase	1403470
conformal_mapping	467782
conformal_pol	1403589
dblexp	6547175
dbllog2	302044246
dft	502225
dual_modulus	1012181
eval_rel_pol	13134263
fft	14155127
fft2	7462
findpower	40943805
fix_roots	536966
fix_roots1	398346
fujiwara_bound	2271012
fujiwara_bound_real	1406701
graeffe	49498128
homothetie	1609606
homothetie2n	9954390
homothetie_gauss	36490738
ind_maxlog2	902430
initdft	996058
isexactpol	239753
isexactscalar	931714
isreal	961619
isvalidcoeff	1228149
logmax_modulus	4449505
logmin_modulus	1614321
logmodulus	606543
logpre_modulus	606539
logradius	493833
lower_bound	40944739
mydbllog2i	226386061
mydbllog2r	56169072
mydbllogr	9544200
mygprec	63741601
mygprec_absolute	4337402
mygprec_special	536981
mygprecrc	215123748
mygprecrc_special	2178235
myshiftic	135813570
myshiftrc	35495214
newton_polygon	5505209
optimize_split	493836
parameters	493835
pol_to_gaussint	17583722
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166691
quicktofp	6976660
realroots	50627
refine_F	502217
refine_H	2459911
root_error	1911587
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288134
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494198
split_0_1	468145
split_0_2	468146
split_1	467783
split_2	493833
split_complete	1525369
split_fromU	493836
split_pols	166691
splitcauchy	166699
splitpoleval	5234749
tocomplex	1213149
update_radius	493831
usp	1125895

Generated by: LCOV version 1.16